Harmonic Motion and SoundWabe

Linear Motion

A motion that goes from point a to point b (e.g a car going down the highway)

Periodic Motion

Any repeating motion (e.g a spinning bottle cap)

Harmonic Motion

Repeating motion with a restoring force (e.g a pendulum swinging)

Oscillator

A device that moves and repeats (e.g a tuning fork)

Restoring Force

A force that brings a system back to rest (e.g gravity)

Cycle

One full back and forth motion (e.g a pendulum getting back to where it was released)

Period

The time it takes for one cycle (e.g 4.6 seconds for a cycle)

Amplitude

How far a pendulum gets from its original position (e.g 30°)

Frequency

The number of cycles per seconds (e.g 20 hertz)

What is the equation to find frequency?

f = 1/T

(f= Frequency)

(T = period)

If the mass goes down, what happens to the period?

The period gets shorter

Bob

The mass of the pendulum

Wave

Energy moving through a pendulum from one place to another

Medium

What a wave travels through

Transverse Wave

Motion of the wave is perpendicular to direction

Crest

Highest point of a wave

Trough

Lowet point of a wave