A mass $m = 8\,kg$ is attahced to a spring as shown in figure and held in position so that the spring remains unstretched. The spring constant is $200\,N/m$. The mass $m$ is then released and begins to undergo small oscillations. The maximum velocity of the mass will be ..... $m/s$ $(g = 10\,m/s^2)$
A$1$
B$2$
C$4$
D$5$
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B$2$
b $\mathrm{T}=2 \pi \sqrt{\frac{\mathrm{M}}{\mathrm{K}}}$
or $\omega=\sqrt{\frac{\mathrm{K}}{\mathrm{M}}}=5 \mathrm{rad} / \mathrm{sec}$
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