A particle of mass starts moving in a circular path of constant radius

PHYSICS · Subjective · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A particle of mass

m

starts moving in a circular path of constant radius

r

, such that its centripetal acceleration

a_c

varies with time

t

a_c=k^2rt^2

, where

k

is a constant. What is the power delivered to the particle by the forces acting on it?