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Q.
As a body performs S.H.M., its potential energy $U$ varies with time $t$ as indicated in
Oscillations
Solution:
Potential energy $=\frac{1}{2} k x^{2}=\frac{1}{2} A^{2} \omega^{2} \sin ^{2}(\omega t+\phi)$
The graph for $\sin ^{2}(\omega t+\phi)$ is given by (1).