6. Periodic Motion Flashcards
1
Q
Describe uniform motion in a circle
A
There’s acceleration to change direction and requires centripetal force
2
Q
What is Angular displacement
A
The angle moved in radians
3
Q
What is angular speed?
A
The rate of change of angular displacement with time
ω = v/r = 2πf = 2π/T
4
Q
What is centripetal acceleration?
A
a = v^2/r = ω^2r
5
Q
What is centripetal force?
A
Force required to keep object in circular motion
F= mv^2/r = mω^2r
