Periodic Motion Flashcards
1
Q
Centripetal Acceleration
A
An object moving in a circular path at constant speed has a constantly changing velocity as velocity has magnitude and direction.
2
Q
Centripetal Force
A
The resultant force responsible for an object moving in circular motion. Forces always act towards the centre of the objects rotation.
3
Q
Angular Speed
A
Angle an object moves per unit time
4
Q
How are angles measured?
A
In radians.
5
Q
Convert degrees to radians
A
multiplying by pi/180
6
Q
radians to degrees
A
multiplying by 180/pi
7
Q
arc length =
A
radius
8
Q
derive centripetal force
A
f = m v^/ r
=
m w^2 r
