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1. The problem statement, all variables and given/known data

A particle of mass 'm' is moving in a Circular path of constant radius 'r' such that it's centripetal acceleration is given by a_{c}= k^{2}rt^{2}where k is constant. The power delivered to the particle by the force acting on it is :-

A) 2(pi)mk^{2}r^{2}t

B) mk^{2}r^{2}t

C) (mk^{4}r^{2}t^{5})/3

D) zero

2. Relevant equations

3. The attempt at a solution

Centripetal force will be f=ma_{c}so f=mk^{2}rt^{2}.

Now, Centripetal acceleration = v^{2}/r.

so v= krt

now,

power = force*distance/time_{for which work is done}

(mk^{2}rt^{2}*vt)/t

from this i am getting power as mk^{3}r^{2}t^{3}.

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# Homework Help: Power Question Need Help

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