Question

1. Define centripetal acceleration.        
2. An object of mass 0.4kg is moving in a horizontal circle of radius 24cm at a rate of 2 revolutions per second. Calculate its centripetal acceleration. 

Answer 1

1. Acceleration produced by centripetal force and always directed to the centre of the circle of rotation
2. w=2πr
   =2×3.142×2HΖ
   =12.568
   G=w²r
   =12.568×12.586×0.24m
   =37.91ms⁻²