A body makes angular simple harmonic motion of amplitude \( \pi / 10 \mathrm{rad} \) and time pe...

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A body makes angular simple harmonic motion of amplitude \( \pi / 10 \mathrm{rad} \) and time period \( 0.05 \mathrm{~s} \). If the body is at a displacement \( \theta=\pi / 10 \mathrm{rad} \) at \( t=0 \), write the equation giving angular displacement as a function of time.
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