AP Physics C: Mechanics FRQ Room

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AP Physics C: Mechanics Free Response Questions

The best way to get better at FRQs is practice. Browse through dozens of practice AP Physics C: Mechanics FRQs to get ready for the big day.

  • View all (250)
  • Unit 1: Kinematics (41)
  • Unit 3: Work, Energy, and Power (46)
  • Unit 4: Systems of Particles and Linear Momentum (34)
  • Unit 5: Rotation (41)
  • Unit 6: Oscillations (50)
  • Unit 7: Gravitation (38)
Unit 1: Kinematics

Analyzing a Two-Dimensional Collision

Two objects undergo a collision in a plane. Object A (mass m_A) experiences a force during the colli

Hard

Analyzing Two-Dimensional Motion Using a High-Speed Camera

In an experiment on projectile motion, a high-speed camera was used to record the two-dimensional mo

Medium

Block on an Inclined Plane: Kinematic Analysis

A block of mass m is released from rest at the top of a frictionless inclined plane of length L = 10

Easy

Circular Motion: Centripetal Acceleration from Tangential Speed Function

An object moves in a circular path of constant radius $$R = 3.0\,m$$. Its tangential speed varies wi

Hard

Critical Evaluation of Experimental Kinematics Data

A researcher claims that the motion of a falling object is characterized by uniform acceleration. Th

Extreme

Decoupling Horizontal and Vertical Motions in Projectile Motion

A projectile is launched from the ground, and its position is recorded over time. The following tabl

Medium

Deriving Velocity and Acceleration from a Position Function

Consider an object moving along a straight line with its position given by $$x(t)=\sin(t)$$, where x

Easy

Determining Acceleration Due to Gravity from Free Fall

A student conducted an experiment by dropping a metal ball from a height of 45 m. A digital timer co

Medium

Determining Zero Acceleration from a Non-linear Position Function

An object's position is given by the function $$x(t)=t^4-8*t^2$$. Determine at what time the object'

Hard

Displacement-Time Graph Analysis for Non-Uniform Motion

A displacement vs. time graph for an object moving in one dimension is given by the function $$s(t)=

Extreme

Dynamics on an Inclined Plane with Friction

A 4.0-kg block is released from rest at the top of a 10.0-m long incline that makes an angle of $$25

Medium

Evaluating Non-Uniform Acceleration from Experimental Data

A student records the following velocity data for an object undergoing non-uniform acceleration:

Extreme

Free Fall from a Cliff with Calculus Insights

A rock is dropped from an 80-meter cliff. Assuming the only acceleration is due to gravity (with $$g

Medium

Free Fall with Air Resistance

A 2.0-kg object is dropped from rest and falls under gravity while experiencing air resistance propo

Hard

Free-Fall Motion Analysis

A rock is dropped (from rest) from the top of an 80 m cliff. Assume that the acceleration due to gra

Easy

FRQ 10: Experimental Analysis of Free Fall

Below is experimental data from free fall tests for objects dropped from various heights: | Height

Medium

FRQ 15: Investigating Uniformly Accelerated Motion Using Integrals

A researcher records the acceleration of an object with a sensor, finding that the acceleration vari

Medium

FRQ 17: Vector Field Analysis – Wind Impact on Projectile Motion

A researcher examines how a time-varying wind affects the horizontal motion of a projectile. In this

Hard

FRQ 18: Determining Launch Parameters from Projectile Data (EXTREME)

A projectile’s path was experimentally measured, and the following graph (provided) shows its parabo

Extreme

Impulse and Momentum with a Variable Force

A cart of mass $$m = 5.0\,kg$$ is subjected to a time-dependent force described by $$F(t)=5*t²$$ (in

Hard

Instantaneous vs. Average Velocity

An object’s position is given by the function $$x(t)=t^4 - 4*t^2$$ (x in meters).

Medium

Kinematics with Resistive Forces

Design an experiment to study the motion of an object falling under gravity while experiencing a dra

Hard

Lab Investigation: Effects of Launch Angle on Projectile Range

In a controlled laboratory experiment, a student launches a projectile with a fixed initial speed of

Medium

Motion Lab Data Analysis

In a laboratory experiment, a car’s position along a straight track was recorded over time. The data

Medium

Motion on an Inclined Plane

A student investigates the motion of a block sliding down a 30° inclined plane initially in a fricti

Easy

Optimizing the Launch Angle for Maximum Horizontal Displacement on Uneven Terrain

A projectile is launched with an initial speed of 40 m/s from a platform that is 10 m above the grou

Extreme

Oscillatory Motion: Mass-Spring System

A 1.0-kg mass is attached to a spring with a spring constant of $$k = 16\, N/m$$. The mass is displa

Medium

Predicting Motion in a Resistive Medium

An object in free fall experiences a time-dependent acceleration given by $$a(t)=g\left(1-\frac{t}{T

Hard

Projectile Motion on an Inclined Plane

A ball is launched with an initial speed of $$30\,m/s$$ at an angle of $$40^\circ$$ above the horizo

Hard

Relative Motion Analysis of Two Moving Objects

Two objects move along a straight track with positions given by $$x_A(t)= 3*t^2$$ and $$x_B(t)= 6*t

Medium

Relative Motion: Two Trains on Parallel Tracks

Two trains move on parallel tracks. Train A has its position given by $$x_A(t)=25t$$ and Train B by

Easy

Rotational Dynamics: Variable Torque

A solid disk with moment of inertia I is subject to a time-dependent torque given by $$\tau(t)= 5*t$

Hard

Skydiver with Air Resistance: Variable Acceleration

A skydiver of mass m experiences air resistance proportional to velocity, characterized by the const

Extreme

Terminal Velocity Experiment

An experiment involves dropping objects of varying shapes from a tall building to study terminal vel

Hard

Time-Dependent Acceleration Analysis

A particle experiences a time-dependent acceleration given by $$a(t)=2t\,e^{-t}\,m/s^2$$. At time \(

Extreme

Time-Dependent Force and Work-Energy Theorem

A particle of mass m moves along a straight line under a time-dependent force $$F(t)= 100\,e^{-t}$$

Medium

Two-Dimensional Motion with Vector Decomposition

An object moves in the plane and its position is given by the vector function $$\vec{r}(t)= \langle

Hard

Uniformly Accelerated Motion on a Track

Design an experiment to test the hypothesis that in uniformly accelerated motion, the displacement i

Easy

Uniformly Accelerated Motion With Non-Zero Initial Velocity

An object moves along a straight path with an initial velocity of $$u=5\,m/s$$ and a constant accele

Hard

Uniformly Accelerated Motion: Derivation and Application

A car accelerates uniformly from rest. Its velocity as a function of time can be expressed as $$v(t)

Hard

Variable Net Force Experiment

A cart on a frictionless track is subjected to a variable net force given by $$F(t)= 10*t$$ (N). The

Medium
Unit 3: Work, Energy, and Power

Analysis of a Potential Energy Curve

An object of mass 3 kg moves along the x-axis in a potential energy field given by $$U(x) = (x-1)(x-

Hard

Analysis of Kinetic Energy Dissipation in Inelastic Collisions

A researcher examines a perfectly inelastic collision. Object A (mass 2 kg) moving at 4 m/s collides

Hard

Calculus-Based Examination of a Spring System

A spring with a spring constant $$k = 200\,N/m$$ is compressed by a distance x and then released. An

Medium

Collision and Energy Loss Analysis

Two objects collide inelastically and stick together. Object A has mass 3 kg moving at 4 m/s, and Ob

Easy

Compound Machine Energy Analysis Experiment

A compound machine consisting of a lever and a pulley is used to lift a load, and the work input is

Hard

Determining Maximum Height using Energy Conservation

A researcher launches a ball of mass 0.06 kg vertically upward with an initial speed of 50 m/s in a

Medium

Dissipative Work under Variable Friction

A 5 kg block is sliding on a horizontal surface with an initial speed of 10 m/s. The coefficient of

Hard

Efficiency Analysis of a Mechanical System

A motor lifts a 100 kg mass by raising it 10 m in 20 seconds, using an electrical energy input of 15

Easy

Energy Analysis of a Damped Spring-Mass Oscillator

A spring-mass system consists of a mass $$m = 2 \;\text{kg}$$ attached to a spring with force consta

Hard

Energy Conservation in Orbital Motion

A satellite of mass 2000 kg is in a circular orbit at a distance of 7000 km from the center of Earth

Hard

Energy Conservation on a Frictional Ramp with Calculus Approach

A 2-kg block slides down a straight inclined ramp from a height of $$h = 2 \;\text{m}$$. The ramp is

Medium

Energy Dissipation in Damped Oscillations

A damped harmonic oscillator consists of a 1 kg mass attached to a spring (k = 50 N/m) with a dampin

Extreme

Energy Loss in a Ball with Air Resistance

A ball with a mass of 0.5 kg is thrown vertically upward with an initial speed of 20 m/s. During its

Hard

Energy Loss in a Damped Pendulum

A pendulum with a length of 1.5 m and a bob of 0.8 kg experiences damping such that its amplitude de

Extreme

Equilibrium Points from a Potential Energy Function

A particle of mass 4 kg experiences a potential energy given by $$U(x) = (x - 2)^2 - (2*x - 3)^3$$ (

Hard

Friction‐Influenced Kinetic Energy Loss Experiment

A 1 kg block is pushed along a horizontal rough surface with a coefficient of kinetic friction μ = 0

Easy

FRQ 2: Work Done by a Variable Force on a Crate Along a Horizontal Floor

A crate is pulled along a horizontal surface with an applied force that varies with displacement. Th

Medium

FRQ 3: Kinetic Energy Measurement in Free Fall

A researcher presents data claiming that objects dropped from rest convert all gravitational potenti

Medium

FRQ 4: Potential Energy Curve Analysis for a Diatomic Molecule

A scientific paper provides the potential energy function for a diatomic molecule as $$U(x) = U_0 \l

Hard

FRQ 7: Energy Loss Due to Friction on a Sliding Object

An object is sliding along a horizontal surface and loses kinetic energy due to friction. A sensor r

Medium

FRQ 9: Calculus-Based Work Determination in a Braking Scenario

A car undergoing braking experiences a variable force that depends on its displacement. The braking

Hard

FRQ 10: Conservation of Energy in a Pendulum Experiment

A simple pendulum with a length of 2.0 m is released from an angle of 30° with respect to the vertic

Easy

FRQ 15: Energy Conservation in an Oscillating Spring–Mass System

A 2-kg mass attached to a spring (with spring constant k = 200 N/m) oscillates horizontally. A displ

Medium

FRQ 16: Work and Energy Transformation in a Compound Machine

A 10-kg block is pushed up a frictionless ramp using a compound pulley system. A force sensor record

Hard

FRQ 18: Work–Energy Analysis of a Decelerating Elevator

An elevator with a mass of 1200 kg decelerates uniformly as it approaches a floor. A motion analysis

Hard

FRQ 20: Evaluating Efficiency in a Conveyor Belt System

In a conveyor belt system used for transporting goods, the work input and the corresponding measured

Extreme

Inclined Plane Energy Transfer Experiment

In an experiment, a 2 kg block is released from rest and slides down a frictionless inclined plane o

Easy

Inclined Plane Friction Variation Experiment

A block is allowed to slide down an inclined plane over which the coefficient of friction is not con

Hard

Instantaneous and Average Power in a Variable Force System

A block is subjected to a variable force and its velocity varies with time. The force acting on the

Hard

Interpreting a Diagram of Work–Energy Processes

A detailed diagram is provided that illustrates a block sliding down an inclined plane with friction

Medium

Kinetic Energy Measurement in a Projectile Experiment

A researcher is studying the change in kinetic energy of a small projectile. A ball of mass $$m = 0.

Easy

Oscillatory Motion Energy Exchange Experiment

A mass attached to a vertical spring oscillates up and down, and a sensor records its displacement a

Easy

Potential Energy Curve Analysis

An object of mass m is subject to a potential energy function given by $$U(x) = x^3 - 6*x^2 + 9*x +

Extreme

Power Output Fluctuations in a Jogger

A 70 kg jogger runs along a track with an instantaneous velocity given by $$v(t) = 2 + 0.5\,t$$ (in

Medium

Power Output Measurement in an Elevator Experiment

A 500 kg model elevator is accelerated from rest to a speed of 2 m/s over a distance of 3 m under th

Hard

Power Output Variation in a Machine

An object is being moved along a straight path by a constant force of 10 N. The displacement as a fu

Medium

Projectile Energy Analysis with Air Resistance Correction

A 0.5 kg ball is thrown vertically upward with an initial speed of 20 m/s. Air resistance does negat

Medium

Rolling Through a Loop-the-Loop

A roller coaster car of mass 500 kg starts from rest at a height of 50 m above the bottom of a verti

Medium

Rotational Energy Transfer in a Spinning Disc

A disc of mass 2 kg and radius 0.5 m has a moment of inertia given by $$I = \frac{1}{2} m R^2$$ and

Hard

Variable Force and Work on a Block

A 4 kg block is pushed along a horizontal, frictionless surface by a variable force given by $$F(x)

Easy

Vertical Lift Work Measurement Experiment

In this vertical lift experiment, an object is raised by a motor and its applied force and displacem

Medium

Work Done by a Time-Dependent Force

A 4 kg object on a frictionless surface is subjected to a horizontal force given by $$ F(t) = 10 * t

Hard

Work with Constant and Variable Forces

An object is acted upon by two different types of forces on separate occasions. In Part (a), a const

Medium

Work-Energy Theorem in a Non-Uniform Gravitational Field

A particle of mass 1 kg is raised from the surface of a planet where the gravitational acceleration

Hard

Work-Energy Theorem in a Variable Force Field

A particle of mass 2 kg is acted on by a position-dependent force given by $$F(x) = 10 - 2*x$$ N, wh

Medium

Work-Energy Theorem in Inelastic Collisions

A 3-kg cart moving at 4 m/s collides inelastically with a stationary 2-kg cart on a frictionless tra

Medium
Unit 4: Systems of Particles and Linear Momentum

Block on an Incline: Collision and Momentum

A 2-kg block slides down a frictionless incline of length 4 m, which makes an angle of 30° with the

Medium

Calculus-Based Analysis of a Variable Density Disk

A thin disk of radius $$R = 0.5$$ m has a surface mass density that varies with radius as $$\sigma(r

Extreme

Center of Gravity vs. Center of Mass in a Tilted Rod

A uniform rod is supported on one end by a fulcrum. In an experiment, additional weights were placed

Medium

Center of Mass Acceleration under Variable Force

Two blocks with masses $$m_1 = 3\,\text{kg}$$ and $$m_2 = 2\,\text{kg}$$ are connected by a light ro

Medium

Center of Mass Calculation of a Non-Homogeneous Beam

A horizontal beam of length $$4$$ m has a linear mass density given by $$\lambda(x) = 5 + 4 * x^2$$

Hard

Center of Mass in a Coupled Mass-Spring System

Two masses (m1 = 1.5 kg and m2 = 1.5 kg) are connected by a light spring on a frictionless track. In

Easy

Center of Mass of a Composite Three-Dimensional Object

A uniform cube (mass $$4$$ kg, side length $$0.5$$ m) and a uniform sphere (mass $$2$$ kg, radius $$

Hard

Center of Mass of a Non-uniform Circular Disk

A thin circular disk of radius $$R$$ has a surface mass density given by $$\sigma(\theta)= k\,(1+\co

Hard

Center-of-Mass Motion Under an External Force

Consider a system composed of two masses, $$m_1=2.0\,kg$$ and $$m_2=3.0\,kg$$, connected by a light,

Medium

Center-of-Mass of a Ladder with Varying Linear Density

A ladder of length $$L=2.0\,m$$ has a vertical linear mass density given by $$\lambda(y)=3.0(1+y)$$

Medium

Combined Translational and Rotational Motion Analysis

A uniform rod of length $$2\,m$$ and mass $$4\,kg$$ is pivoted at one end. Initially at rest, an imp

Extreme

Composite Object: Rod with Attached Sphere

A uniform rod of length 1 m and mass 2 kg has a small sphere of mass 1 kg attached to its right end.

Easy

Explosive Separation in a Multi‐Stage Rocket

A multi‐stage rocket undergoes an explosive separation. Experimentally, Stage 1 (mass = 2000 kg) is

Extreme

FRQ 2: Center of Mass of a Composite Lamina

Consider a composite lamina composed of two rectangular regions in the xy-plane. Region A is 0.8 m b

Medium

FRQ 5: Physics of a Football Punt

A football with a mass of 0.4 kg is punted so that its launch speed is 30 m/s, with the kicker’s foo

Easy

FRQ 19: Calculating COM for a Variable Density 2D Lamina

A two-dimensional lamina occupies the region defined by $$0 \le x \le 2$$ and $$0 \le y \le 3$$ in t

Extreme

Impulse and Average Force on a Punted Football

A football (mass = 0.4 kg) is kicked such that its speed increases from 0 to 30 m/s in 8 ms. (a) Use

Easy

Impulse and Momentum Change for a Hockey Puck

A 0.1 kg hockey puck initially has a momentum of 0.5 kg·m/s. It then receives an impulse that increa

Medium

Impulse and Swing Angle in a Pendulum

A pendulum bob of mass $$1.0\,kg$$ initially at rest is given a horizontal push by a time-dependent

Hard

Impulse and Work: Discerning Differences

A particle of mass 3 kg is subjected to a force that varies with position according to $$F(x)=12*x^2

Medium

Impulse Delivered by a Decreasing Force from a Water Jet

A water jet impinging on a stationary nozzle exerts a time-varying force given by $$F(t)=50 - 10*t$$

Medium

Impulse Delivered by a Variable Force

A particle experiences a time-dependent force along the x-axis given by $$F(t)=4*t^2 - 12*t + 9$$ N

Medium

Impulse in a Rebounding Ball Collision

A 0.2 kg ball is dropped from a height of 5 m onto a hard surface and rebounds with 60% of its impac

Extreme

Impulse Transfer on a Rotating Rod

A uniform rod of length $$4\,\text{m}$$ and mass $$8\,\text{kg}$$ is initially at rest, pivoted fric

Extreme

Integrated Analysis of Momentum and Center of Mass in a Multi-Stage Experiment

In a complex experiment, a projectile traveling at 10 m/s with a mass of 5.0 kg breaks apart mid-fli

Extreme

Momentum Conservation in Glider Collisions on an Air Track

In a laboratory experiment, students investigate conservation of momentum by allowing two gliders to

Medium

Motion of the Center of Mass Under an External Force

A system consists of two particles with masses 2 kg and 3 kg located at x = 0 m and x = 4 m, respect

Medium

Motion of the Center of Mass under External Force

Consider a two-particle system consisting of masses $$m_1 = 4\,kg$$ and $$m_2 = 6\,kg$$. An external

Medium

Motion of the Center of Mass Under External Force

A 10 kg system is subjected to a net external force that varies with time. An experiment records the

Medium

Projectile and Cart Collision: Trajectory Prediction

A 0.2 kg projectile is launched horizontally at 10 m/s from a 20 m high platform. At the same moment

Hard

Rocket Propulsion and Center of Mass Dynamics

A rocket has an initial total mass of $$M_0 = 5000\;kg$$ and burns fuel such that its mass decreases

Extreme

Rotational Dynamics of a Composite Object

A composite object consists of two connected rods: Rod A is 1 m long and has uniform density, while

Extreme

Two-Dimensional Elastic Collision Analysis

A 1 kg particle moving horizontally at 4 m/s collides elastically with a 2 kg particle initially at

Hard

Two-Stage Collision in Coupled Carts

Two carts on a frictionless track undergo a two-stage event. Initially, cart A (mass $$2\,kg$$, velo

Hard
Unit 5: Rotation

Angular Displacement and Kinematics Analysis

A researcher is investigating the kinematics of a rotating disk. The disk rotates about its center,

Easy

Angular Momentum and Torque in Circular Motion

A particle of mass m moves in a circle of radius r with an angular velocity given by $$\omega(t)= 3t

Medium

Angular Momentum Conservation in a Merry-Go-Round Experiment

A child standing on the edge of a rotating merry-go-round (modeled as a disk) provides an opportunit

Easy

Angular Momentum Conservation in Explosive Separation

A symmetric rotating disk of mass $$M$$ and radius $$R$$ is spinning with an angular velocity $$\ome

Hard

Angular Momentum Conservation: Ice Skater

An ice skater is spinning with an initial angular velocity $$\omega_i$$ and an initial moment of ine

Easy

Angular Momentum in a Variable Moment of Inertia System

A researcher examines the dynamics of a rotating system whose moment of inertia changes with time du

Hard

Angular Momentum in Explosive Separation

A spinning disk with an initial angular velocity $$\omega_i$$ undergoes an explosion that breaks it

Extreme

Angular Momentum Transfer in a Dual-Wheel System

Two wheels, A and B, are coupled so that friction between them eventually brings them to a common an

Extreme

Calculation of Rotational Inertia for Composite System

A uniform disk of mass $$M = 2\,kg$$ and radius $$R = 0.5\,m$$ has two small beads, each of mass $$m

Hard

Calculus Derivation of the Moment of Inertia for a Disk

Using the integral formula $$I = \int r^2\,dm$$, derive the moment of inertia for a uniform circular

Hard

Calculus Derivation of the Moment of Inertia for a Uniform Disk

Derive the moment of inertia for a uniform solid disk of mass M and radius R about its central axis

Medium

Comparative Angular Momentum in Different Systems

Compare the application of conservation of angular momentum in two systems: a spinning mechanical wh

Hard

Complex Rotational Motion: Gyroscopic Precession

A spinning top has a spin angular momentum of $$L = 0.15 \text{ kg m}^2/\text{s}$$ and experiences a

Extreme

Composite Rod and Point Masses Inertia Analysis

A uniform rod of length L and mass M is pivoted about its left end. Two small beads, each of mass m,

Medium

Coupled Rotational Dynamics of Two Disks

Two disks with different masses and radii are mounted on a common, frictionless axle. Disk A has mas

Hard

Dynamic Analysis of a Gyroscope: Precession

A gyroscope consists of a spinning disk mounted on a pivot. The center of mass is offset from the pi

Extreme

Dynamic Stability of a Rotating Space Station

A rotating space station initially spins with angular velocity $$\omega_i$$ and has a moment of iner

Hard

Effect of Friction on Rotational Motion

Design an experiment to quantify the torque losses due to friction in a rotating apparatus. Your goa

Medium

Energy Analysis in Rolling Motion

A spherical ball of mass $$M$$ and radius $$R$$ rolls without slipping down an inclined plane of ver

Medium

Energy Dissipation in a Rotating System with Friction

A turntable with moment of inertia $$I = 0.3 \text{ kg m}^2$$ is initially spinning at $$\omega_0 =

Extreme

Energy Transfer in Rolling Objects

Design an experiment to study the energy conversion in a rolling object down an incline, by measurin

Hard

Engine Torque Measurement Analysis

A mechanical engineer is analyzing the torque output of a car engine. The engine uses a lever arm at

Medium

Experimental Measurement of Rotational Inertia Using Oscillations

A researcher is designing an experiment to measure the moment of inertia of various objects using an

Medium

FRQ 9: Experimental Determination of Moment of Inertia

A student performs an experiment to determine the moment of inertia of a uniform disk by measuring i

Hard

FRQ 18: Rotational Equilibrium of a Beam

A horizontal beam is supported at both ends. Three forces act on the beam: • A force \(F_1 = 100.0\

Easy

Gyroscopic Precession

A spinning gyroscope with an angular momentum $$L$$ experiences an external torque $$\tau$$ causing

Extreme

Impact of Off-Center Mass in Rotational Dynamics

A student attaches a small mass to a rotating disk at a point away from the center to study its effe

Medium

Impulse and Angular Momentum: Impact on a Rotating Disk

A solid disk of mass $$M = 2.0 \text{ kg}$$ and radius $$R = 0.25 \text{ m}$$ is spinning with an in

Medium

Lever Torque Application

A mechanic uses a long lever to lift a heavy object. A force of $$F = 100 \text{ N}$$ is applied at

Easy

Mathematical Modeling of Brake Systems

A braking system applies a constant torque of $$\tau = 15 \text{ Nm}$$ on a flywheel with moment of

Medium

Non-uniform Mass Distribution Effects on Rotational Inertia

Consider a rod of length $$L$$ whose linear mass density varies as $$\lambda(x) = \lambda_0 * (1 + x

Extreme

Non-uniform Rotational Acceleration: Differentiation from Graph

A rotating disk exhibits a non-uniform angular velocity as a function of time. The experimental grap

Extreme

Rolling Motion and Energy Conservation: Rolling Cylinder on an Incline

A solid cylinder of mass $$M = 5.0 \text{ kg}$$ and radius $$R = 0.4 \text{ m}$$ rolls without slipp

Hard

Rotational Impulse and Change in Angular Momentum

A flywheel initially at rest receives a constant torque impulse over a brief time interval.

Easy

Rotational Inertia Determination Using a Torsion Pendulum

You are provided with a torsion pendulum apparatus consisting of a rod suspended by a wire with a kn

Medium

Rotational Kinematics: Angular Displacement via Integration

A motor provides an angular acceleration given by $$\alpha(t) = 4 - 0.5*t$$ (in rad/s²) for $$0 \le

Hard

Torque and the Right-Hand Rule Verification Experiment

Design an experiment to verify the direction of the torque vector as predicted by the right-hand rul

Hard

Torsion Pendulum and Restoring Torque Error

In a torsion pendulum experiment, a disk is suspended from a wire and its angular displacement due t

Hard

Torsional Oscillator Analysis

A torsional pendulum consists of a disk suspended by a wire with torsion constant $$k$$. The system

Hard

Work Done by Torque and Rotational Kinetic Energy

An engine applies a constant torque to a flywheel, causing it to rotate from rest through an angular

Medium

Wrench Torque Analysis

A mechanic uses a wrench to loosen a bolt. Consider a wrench of length L = 0.3 m. In part (a), the m

Easy
Unit 6: Oscillations

Analyzing the Role of Initial Conditions in SHM

In an experiment on a mass-spring oscillator, students set the system in motion with various initial

Medium

Comparing Vertical and Horizontal Oscillations in Mass-Spring Systems

A claim has been made that 'the behavior of a vertical spring-mass oscillator is identical to that o

Medium

Comparison of Oscillatory Systems: Spring vs. Pendulum

A mass-spring system (with mass $$m$$ and spring constant $$k$$) and a simple pendulum (with length

Medium

Damped Oscillation: Logarithmic Decrement Analysis

A spring-mass oscillator exhibits damped oscillations, and the amplitudes of successive cycles are r

Hard

Data Analysis of Damped Oscillations

A damped oscillator is described by the function: $$y(t) = 0.1 * e^{-\frac{b * t}{2m}} * \cos(\omeg

Extreme

Deriving the Equation of Motion Using Calculus

An undamped harmonic oscillator is governed by the differential equation $$\ddot{x} + \omega^2 x = 0

Medium

Deriving the General Solution of SHM

Derive and analyze the general solution for simple harmonic motion from the governing differential e

Easy

Determination of Gravitational Acceleration Using a Vertical Oscillator

A vertical spring-mass oscillator reaches equilibrium when the spring stretches by a distance $$d$$

Easy

Determination of Spring Constant via Oscillation Period

An experiment is set up to determine the spring constant k by measuring the period of oscillations f

Medium

Determining the Spring Constant from Oscillation Data

A student conducts an experiment to determine the spring constant $$k$$ of a spring by measuring the

Medium

Differentiation in SHM: Velocity and Acceleration

An oscillator is described by the function $$y = A * \sin(\omega * t + \phi_0)$$. Investigate the ve

Medium

Differentiation of Sinusoidal Motion

Given the position function of a mass-spring oscillator as $$x(t) = 0.08\,\text{m} \sin(10\,t + 0.2)

Hard

Driven Oscillations and Resonance in a Mass-Spring System

A mass-spring system of mass $$m$$ is subjected to an external periodic driving force given by $$F(t

Extreme

Driven Oscillations and Resonance in a Spring Oscillator

A mass-spring oscillator is subjected to an external sinusoidal driving force given by $$F_d(t)=F_0\

Hard

Effect of Mass Variation on SHM

A block attached to a spring oscillates, and the period of oscillation is given by $$T = 2\pi\sqrt{\

Medium

Effects of Mass Variation on Oscillation Frequency

A student investigates how the oscillation frequency of a spring-block system varies with the mass a

Medium

Energy Analysis and Instantaneous Power in SHM

A block of mass $$m = 0.1\,kg$$ is attached to a spring with force constant $$k = 800\,N/m$$ and osc

Hard

Energy Conservation in Pendulum Motion

A pendulum bob of mass $$m=0.5\,\text{kg}$$ is released from rest at an angle of $$20^\circ$$ from t

Hard

Energy Conservation in Vertical Spring Oscillations

A 1.5 kg block is attached to a vertical spring with force constant $$k = 300\,N/m$$. After reaching

Easy

Energy Exchange in Oscillatory Systems

A new research article claims that 'the maximum speed of a block on a spring is invariant with respe

Hard

Estimating Spring Constant from Kinetic Energy Measurements

A spring-mass oscillator's maximum kinetic energy is measured during its motion. Using energy conser

Hard

Experimental Verification of Hooke's Law

A physics lab setup involves a horizontal spring-mass system to test Hooke’s law. In this experiment

Easy

FRQ 1: Hooke’s Law Experiment

In a laboratory experiment, the restoring force of a spring was measured for various displacements f

Medium

FRQ 2: Energy Conversion in a Spring Oscillator

A block attached to a spring oscillates on a frictionless surface. The following table presents expe

Medium

FRQ 10: Calculus Integration for Work Done in a Spring

Force measurements during the stretching of a spring were recorded as a function of displacement. Us

Medium

FRQ 10: Differential Equation of a Horizontal Mass-Spring System

Consider a mass attached to a horizontal spring on a frictionless surface. Answer the following:

Hard

FRQ 14: Impact of Initial Conditions on SHM

An oscillator is released from an initial displacement of 0.05 m with an initial upward velocity of

Hard

FRQ 14: Work Done by a Spring via Integration

Using calculus, derive an expression for the work done in stretching a spring from its natural lengt

Hard

FRQ1: Hooke’s Law in a Horizontal Spring-Mass System

A horizontal spring with force constant $$k = 250\,N/m$$ is fixed at one end. A block attached to th

Easy

FRQ6: Calculus Derivation of Velocity and Acceleration in SHM

For a mass undergoing simple harmonic motion described by the displacement function $$x(t)= A\sin(\o

Hard

FRQ7: Period of a Simple Pendulum under the Small-Angle Approximation

A simple pendulum consists of a mass attached to a massless string of length \(L\). Answer the foll

Easy

FRQ11: Work Done in Stretching a Spring – Integral Calculus Approach

A spring has a force constant of $$k = 150\,N/m$$. The work done in stretching the spring from its e

Medium

FRQ17: Calculus-Based Derivation of Velocity and Acceleration in SHM

Consider a mass undergoing simple harmonic motion described by the displacement function: $$x(t)= A

Medium

FRQ18: Effect of Mass Variation on the Oscillation Period

The period \(T\) of a mass-spring oscillator is given by the formula: $$T = 2\pi\sqrt{\frac{m}{k}}.

Easy

FRQ20: Energy Dissipation in Damped Pendulum Oscillations

A damped pendulum oscillates with small angles such that its motion is approximately described by $

Hard

Hooke’s Law and Work in Spring Systems

A spring with a spring constant $$k = 250\,N/m$$ is initially at its natural length. (a) Using Hooke

Easy

Horizontal Mass-Spring Oscillator Analysis

A laboratory experiment involves a block of mass $$m = 0.50\,kg$$ attached to a horizontal spring of

Easy

Mass Variation and Frequency in SHM

Consider a spring oscillator with a constant spring constant of $$k = 200\,N/m$$. The frequency of o

Medium

Mechanical Energy in SHM

A researcher attaches a block of mass $$m = 0.05 \; kg$$ to a horizontal spring with force constant

Medium

Modeling Amplitude Reduction Due to Non-Conservative Forces

In a real oscillatory system, non-conservative forces (like friction) result in an energy loss per c

Extreme

Oscillations in a Coupled Mass-Spring System

Two masses, $$m_1 = 0.1 \; kg$$ and $$m_2 = 0.2 \; kg$$, are coupled by a single spring with a force

Extreme

Pendulum Experiment Analysis

A researcher uses a simple pendulum to measure gravitational acceleration. The pendulum has a length

Medium

Pendulum Motion Beyond the Small-Angle Approximation

For a pendulum, the restoring force is accurately given by $$mg\sin(\theta)$$ rather than $$mg\theta

Medium

Period and Frequency of a Vertical Oscillator

A block of mass $$m = 1.5 \; kg$$ is suspended from a vertical spring with a force constant of $$k =

Easy

Period Estimation Using Calculus in Simple Pendulum Experiments

An experimental study reports that integrating the motion equations of a simple pendulum leads to pe

Hard

Phase Space Analysis of SHM

A student plots the phase space diagram (velocity vs. displacement) of a simple harmonic oscillator

Hard

Resonance in Forced Oscillations

A researcher sets up a forced oscillation experiment with a mass-spring system subject to a sinusoid

Hard

Simple Pendulum Energy Analysis

Consider a simple pendulum of length $$L$$ and mass $$m$$ undergoing small oscillations. Answer the

Medium

Transit Time of a Simple Pendulum in Different Gravitational Fields

A simple pendulum with a length of $$L=2.0\,\text{m}$$ oscillates on Earth (with \(g=9.81\,\text{m/s

Hard

Vertical Oscillations: Energy and Force Analysis

Consider a block attached to a vertical spring. Analyze the system from both the force and energy pe

Hard
Unit 7: Gravitation

Analysis of Orbital Transfer Maneuvers Using Calculus

A spacecraft is initially in a circular orbit of radius $$ r_1 $$ and is to be transferred to a circ

Hard

Analyzing a Two-Body Gravitational Interaction Using Calculus

Consider two objects of masses $$m_1$$ and $$m_2$$ that are initially at rest and start moving towar

Hard

Calculus Analysis of Gravitational Potential Energy

Gravitational potential energy (GPE) plays a crucial role in systems influenced by gravity. Answer t

Hard

Calculus in Gravitational Work: Integration of Inverse Square Force

Using Newton's Law of Gravitation, the force on an object is given by $$F(r) = -\frac{G * M * m}{r^2

Hard

Calculus in Orbital Motion: Area Sweep in an Elliptical Orbit

Kepler's Second Law implies that the rate of area sweep (dA/dt) is constant for an orbiting body. In

Hard

Calculus Modeling of Tidal Forces

Tidal forces arise due to the differential gravitational pull on different parts of an extended obje

Hard

Center of Mass Analysis in Two-Body System

For a star-planet system, the barycenter determines the common center of mass around which both bodi

Easy

Center of Mass of the Sun-Earth System

Consider the Sun-Earth system where the mass of the Earth is $$m = 5.98 \times 10^{24} \text{ kg}$$,

Medium

Derivation of Kepler's Second Law from Angular Momentum Conservation

Using the principle of conservation of angular momentum, derive Kepler's Second Law which states tha

Easy

Derivation of Orbital Period from Gravitational Force

Using calculus, derive the expression for the orbital period of a planet in circular orbit from Newt

Hard

Deriving the Gravitational Field from a Potential Function

Given the gravitational potential function $$V(r)= -\frac{G*m*M}{r}$$, you are to derive the gravita

Easy

Determining Gravitational Potential from Force Field Data

An experiment measures the gravitational force as a function of distance, providing data described b

Hard

Eccentricity and Elliptical Orbits

Discuss the role of eccentricity in elliptical orbits and derive the orbit equation in polar coordin

Hard

Effective Gravitational Field on an Irregular Asteroid

An irregularly shaped asteroid has a non-uniform density distribution. To determine the effective gr

Extreme

Effects of Non-Spherical Mass Distribution on Satellite Orbits

A planet is not perfectly spherical but exhibits a slight oblateness, introducing a perturbative ter

Extreme

Elliptical Orbit Dynamics: Speed Variation Analysis

For a planet or satellite in an elliptical orbit, the speed varies along the orbit due to conservati

Medium

Energy Comparisons in Circular and Elliptical Orbits

Compare the total mechanical energy of a satellite in a circular orbit with that in an elliptical or

Medium

Energy Conversion in a Gravitational Slingshot Maneuver

A spacecraft performing a gravitational slingshot maneuver around a planet converts gravitational po

Hard

Energy Conversion in an Asteroid's Elliptical Orbit

A computer simulation is conducted to study the energy conversion in an asteroid's elliptical orbit

Hard

Escape Velocity and Energy Requirements

A spacecraft must reach escape velocity to leave a planet's gravitational field. The escape velocity

Medium

Free-Fall Measurement on a Curved Incline

An experiment is designed to measure gravitational acceleration by allowing a small ball to roll dow

Medium

FRQ 3: Center of Mass in the Sun-Earth System

In the Sun-Earth system, although both bodies orbit their common center of mass (barycenter), the di

Easy

FRQ 12: Designing a Geosynchronous Satellite Orbit

A geosynchronous satellite must orbit the Earth with an orbital period equal to one sidereal day (\(

Medium

FRQ 14: Work Done in Changing Orbital Radius

The work done against gravity in changing the orbital radius of an object is computed by integrating

Medium

FRQ 16: Graphical Analysis of Gravitational Potential Energy vs. Height

The graph provided shows experimental data for gravitational potential energy (in joules) versus hei

Medium

Graphical Analysis of Gravitational Force Variation

A set of experimental data shows how gravitational force varies with distance between two masses. An

Medium

Gravitational Field Modeling for Extended Bodies

Compare the gravitational field produced by an extended, spherically symmetric body to that of a poi

Medium

Investigating Tidal Forces in a Binary Star System

Tidal forces in binary star systems can have significant effects on the stars’ structures. Answer th

Extreme

Kepler's Laws and Orbital Dynamics

A researcher investigates several near-circular planetary orbits around a distant star. Observationa

Medium

Kepler's Third Law and Satellite Orbits

Kepler’s Third Law, when applied to satellites in nearly circular orbits, can be used to relate the

Medium

Kepler's Third Law and Satellite Orbits

Using the provided data for satellite orbits, analyze Kepler’s Third Law. Determine the relationship

Medium

Newton vs. Einstein: Conceptual Analysis of Gravity

Compare and contrast Newton's Law of Gravitation with Einstein's theory of General Relativity. Answe

Extreme

Orbital Periods and Kepler's Third Law

Kepler's Third Law states that the ratio $$\frac{T^2}{a^3}$$ is constant for planets orbiting the sa

Hard

Orbital Simulation Ignoring Relativistic Effects

A simulation models the orbit of a fast-moving object near a massive body using Newton's law of grav

Extreme

Orbital Speed and Radius in Circular Orbits

For an object in a circular orbit, (a) Derive the expression relating orbital speed $$ v $$ to the

Easy

Perturbation in Orbital Motion

A small asteroid deviates from a perfect elliptical orbit due to a time-dependent perturbative force

Hard

Satellite Orbital Decay with Atmospheric Drag Consideration

An experiment is designed to measure the decay of a satellite's orbit by tracking its altitude over

Medium

Tidal Forces and their Impact on Orbital Dynamics

A moon orbits a planet and experiences tidal forces. Analyze how these forces are derived and their

Extreme

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Tips from Former AP Students

FAQ

We thought you might have some questions...

Where can I find practice free response questions for the AP Physics C: Mechanics exam?
The free response section of each AP exam varies slightly, so you’ll definitely want to practice that before stepping into that exam room. Here are some free places to find practice FRQs :
  • Of course, make sure to run through College Board's past FRQ questions!
  • Once you’re done with those go through all the questions in the AP Physics C: MechanicsFree Response Room. You can answer the question and have it grade you against the rubric so you know exactly where to improve.
  • Reddit it also a great place to find AP free response questions that other students may have access to.
How do I practice for AP AP Physics C: Mechanics Exam FRQs?
Once you’re done reviewing your study guides, find and bookmark all the free response questions you can find. The question above has some good places to look! while you’re going through them, simulate exam conditions by setting a timer that matches the time allowed on the actual exam. Time management is going to help you answer the FRQs on the real exam concisely when you’re in that time crunch.
What are some tips for AP Physics C: Mechanics free response questions?
Before you start writing out your response, take a few minutes to outline the key points you want to make sure to touch on. This may seem like a waste of time, but it’s very helpful in making sure your response effectively addresses all the parts of the question. Once you do your practice free response questions, compare them to scoring guidelines and sample responses to identify areas for improvement. When you do the free response practice on the AP Physics C: Mechanics Free Response Room, there’s an option to let it grade your response against the rubric and tell you exactly what you need to study more.
How do I answer AP Physics C: Mechanics free-response questions?
Answering AP Physics C: Mechanics free response questions the right way is all about practice! As you go through the AP AP Physics C: Mechanics Free Response Room, treat it like a real exam and approach it this way so you stay calm during the actual exam. When you first see the question, take some time to process exactly what it’s asking. Make sure to also read through all the sub-parts in the question and re-read the main prompt, making sure to circle and underline any key information. This will help you allocate your time properly and also make sure you are hitting all the parts of the question. Before you answer each question, note down the key points you want to hit and evidence you want to use (where applicable). Once you have the skeleton of your response, writing it out will be quick, plus you won’t make any silly mistake in a rush and forget something important.