Explanation
In circular motion, motion of particle is periodic but not simple harmonic as it does not execute to and fro motion about a fixed point.
Displacement will be zero, as it is the least time after which the periodic motion of body repeats itself.
At equilibrium
PE = 0
Total energy = PE + KE
= 0 + KE
Therefore, Total energy = Kinetic energy
In S.H.M the time taken for the particle to go from 0 to A/2 is T1 will be less than time taken to go A/2 A T1< T2
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