Question

A body of mass 1 kg starts moving from rest at t = 0, in a circular path of radius 8 m. Its kinetic
energy varies as a function of time as : K.E. = 2t^2 Joules, where t is in seconds. Then
(A) tangential acceleration = 4 m/s2
(B) power of all forces at t= 2 sec is 8 watt
(C) first round is completed in 2 sec.
(D) tangential force at t = 2 sec is 4 newton​

Answer 1

Answer:

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Explanation:

(b) power of all the forcesat t =2sec is 8watt