Physics Lab Quiz

Linear function equation

Y=mx+b

Linear function formula on position time graph

Change in x = Vxt

Linear function formula for velocity time graph

v= v(initial) + at

Standard form of quadratic function

F(x)= ax² + bx + c

position time function with constant acceleration

X=x(initial) + v(x initial)t + 1/2a(x) t²

Velocity formula

D/T (m/s)

Acceleration formula

V/T (m/s²)

Calculate velocity in position v time graph

V= D/T

Calculate displacement in velocity v time graph

Area 1 + Area 2

What physical quantity is represented by slope of velocity v time graph

Acceleration

How to determine instantaneous velocity from position time graph

Create tangent line on the point and calculate the slope

How to find net result of forces

Add the magnitude of the forces together

Equilibrant force

Force that establishes equilibrium, equal in magnitude but opposite direction

% diff of Fe

(Ecal- Eexp)/(Fexp)

% diff of angle

(Theta Ecal - Theta eexp)/(theta eexp)

Newtons 2nd law

Object acted on by an unbalanced force will accelerate in the direction of the force

Can a body be in equilibrium when only one force acts on it?

No because there would need to be an opposing force pushing back to have equilibrium.

Equation for force

Mass * acceleration

Equation for distance (using acceleration)

D=(1/2)at²

Equation for acceleration

A= F/m-if force is constant

What is torque

Twisting force that tends to cause rotation (Nm)

Define direction of a torque

Clockwise/counterclockwise

Equation for torque

T= Frsin(theta)

What are the conditions for a body to be in equilibrium?

Upward=downward, clockwise=counterclockwise

Equation for rotation equilibrium on a 3 mass system (central point)

m1×1+m2×2=m3×3

How do you prove equilibrium when central point is nor at center?

You add the pt to whichever side of the equation represents the side the center pt is on

What is the equation for work

W=FxD

Define work

Applying a force that causes a displacement (J)

What is energy

Capacity to do work; change in energy = work (J)

What is power

Work per unit of time, how fast you get work one; P=W/t