A body of mass 1 kg starts moving from r...

A body of mass 1 kg starts moving from rest `t = 0` in a circular path of radius 8 m. Its kinetic energy varies with time as `k = 2t^(2) J` then magnitude of centripetal acceleration ( in `m//s^(2)` ) at `t = 2s` is.

Tangential acceleration `=4ms^(-2)`

Power of all force at t = 2 s is 8 W

First - round is completed in 2 s.

Tangential force at t = 2 s is 4 N.

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