A particle of mass $200 \,gm$ executes $S.H.M.$ The restoring force is provided by a spring of force constant $80 \,N / m$. The time period of oscillations is .... $\sec$
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(a) $T = 2\pi \sqrt {\frac{m}{K}} = 2\pi \sqrt {\frac{{0.2}}{{80}}} = 0.31\,sec$
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