Q 3345212163.     A particle of mass m is moving in a circular path of constant radius `r` such that centripetal acceleration `a_c` varying with time is `a_c = k^2 rt^2`, where `k` is a contstant. What is the power delivered to the particle by the force acting on it?

NEET RTN 12
A

`2mkr^2 t`

B

`mkr^2t^2`

C

`mk^2r^2t`

D

`mk^2rt^2`

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