Physics · 2017
JEE Main · 9 April 2017, Shift 1 · Q12
A block of mass 0.1 kg is connected to an elastic spring of spring constant 640 Nm^-1 and oscillates in a damping medium of damping constant 10^-2 kg…
A block of mass $\displaystyle 0.1$ kg is connected to an elastic spring of spring constant $\displaystyle 640 \mathrm{Nm}^{-1}$ and oscillates in a damping medium of damping constant $\displaystyle 10^{-2} \mathrm{~kg} \mathrm{~s}^{-1}$. The system dissipates its energy gradually. The time taken for its mechanical energy of vibration to drop to half of its initial value, is closest to :
Official answer
(4)
$\displaystyle 7$ s
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JEE Main 2017 Physics question, with the answer from NTA’s final answer key. Where our answers come from.