5.2 - Circular motion

Cards (9)

Angular displacement
Ratio of arc length travelled per unit radius
Angular velocity 
The rate of change of angular displacement
Centripetal acceleration
The rate of change of velocity of an orbiting object Acting towards the centre of the circle
Centripetal force
The force required to act on an object, to make it acclerate along an arc at a constant rate Acts towards the centre of the circle
Instantaneous velocity
The velocity of the orbiting object at any one position
Where does the resultant force act in circular motion
Toward centre of circle
Tension at bottom of vertical circle
mv^2/R + mg
Tension at the top of a vertical circle
T=mv^2/r - mg
Why does the speed remain constant even though there is a resultant force acting on it  
Resultant force acts 90 degrees to motion so zero work is done meaning speed is constant