Circular Motion Flashcards
What is the definition of linear velocity?
Rate of change of displacement
What direction is linear velocity?
At a tangent
What is the equation for linear velocity?
v = 2πr / T
What is the unit for linear velocity?
m/s
What is the definition of angular velocity?
Rate of change of angular displacement
What is the equation for angular velocity?
ω = 2π / T
What is the definition of a period?
Time taken for one revolution
What is the definition of frequency?
Number of revolutions in one second
What is the equation for frequency (and period)?
f = 1 / T
What is centripetal acceleration?
When a body is moving in a circle, it has constant speed but does not have constant velocity because it is constantly changing direction
What direction is centripetal acceleration?
Towards the centre of the circle
What are the equations for centripetal acceleration?
a = v^(2) / r a = ω^(2)r
What is centripetal force?
A body of mass, m which is accelerating must be subjected to a force
What is the equation for centripetal force?
F = mv^(2) / r F = mω^(2)r
What direction is centripetal force?
Towards the centre of the circle
NEVER DRAW THE FORCE POINTING OUTWARD
