Physics - Simple Harmonic Motion

What is the worded definition of simple harmonic motion?

An oscillation in which the acceleration of an object is directly proportional to its displacemet from its equilibrium position, and it directed towards the equilibrium.

What is the formula definition of simple harmonic motion?

a ∝ −x

A body in simple harmonic motion has “___” ?

acceleration

What can angular speed be replaced with in the formula for acceleration 

2πf

What shape is the displacement/time graph

cosine wave

What shape is the velocity/time graph

sine wave

What is the shape of the acceleration/time graph

-cosine wave

what can you multiply to find maximum velocity?

ωA

What can you multiply to find maximum acceleration?

ω²A

What is the phase relationship between displacement and acceleration?

Anti-phase

Define restoring force

The net force that always acts to pull an object back toward its equilibrium position

What is the worded definition of mechanical energy?

The sum of an object’s kinetic energy and potential energy

What is natural frequency

The frequency at which a system oscillates when not subjected to a continuous or repeated external force

What is resonance

When driving frequency = natural frequency

What happens when the driving frequency gets close to the resonant frequency?

The system gains more energy so vibrates at a higher amplitude

What is damping?

The reduction in energy and amplitude of oscillations due to resistive forces on the oscillating system

What are the types of damping?

• Light 

• Critical 

• Heavy

What does the graph of light damping look like and what are the key features of the graph?

What does the graph of critical damping look like and what are the key features of the graph?

What does the graph of heavy damping look like and what are the key features of the graph?