# Circular motion and SHM summary notes

- Created by: Sophie kendall
- Created on: 05-01-14 18:13

First 154 words of the document:

Circular motion

A free body following a circular path is said to be undergoing circular motion.

whilst the body may have a constant speed its

velocity is always changing because it changes direction

towards the centre of the circle.

it has centripetal acceleration

A=acceleration

v=velocity

r=radius

Radians

a radian is an angle the angle you get if you draw an arc that has the same length as the

radius

in 180 there are just over 3 radians because 180 =

Angular velocity

Angular displacementthis tells you the angle "swept out" by an object undergoing circular

motion

angular velocity this tells you the angle that is swept out by an object in a certain period

Equations

v=w x r

A=w^2 x r

F=mw^2 x r

F=w^2/r

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