Explanation
At t =0, the particle was at x = A sin (0 + /6) = A/2.
The particle reaches equilibrium at t=t1. Thus 0=Asin(wt1+/6)ort1=−T/12. Since time taken cannot be negative, t1=T/12.
Similarly same time will be used to travel from mean position to +A/2. Thus, total time taken is 2(T/12)=T/6=π3w
The correct option is (c)
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