An object of mass \( 0.5 \mathrm{~kg} \) is executing simple harmonic motion. It amplitude is \(....

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An object of mass \( 0.5 \mathrm{~kg} \) is executing simple
\( \mathrm{P} \)
harmonic motion. It amplitude is \( 5 \mathrm{~cm} \) time period (T) is \( 0.2 \mathrm{~s} \). What will be the potential energy of the object at an instant \( t=\frac{T}{4} s \) starting from mean position. Assume that the initial phase of the oscillation is zero.
(1) \( 0.62 \mathrm{~J} \)
(2) \( 6.2 \times 10^{-3} \mathrm{~J} \)
(3) \( 1.2 \times 10^{3} \mathrm{~J} \)
(4) \( 6.2 \times 10^{3} \mathrm{~J} \)


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