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A spring executes \( \mathrm{SHM} \) with mass of \( 10 \mathrm{~kg} \) attached to it. The force constant of spring is \( 10 \mathrm{~N} / \mathrm{m} \). If at any instant its
\( \mathrm{P} \) velocity is \( 40 \mathrm{~cm} / \mathrm{s} \), the displacement will be (where

W amplitude is \( 0.5 \mathrm{~m} \) )
[RPMT 2004]
(a) \( 0.09 \mathrm{~m} \)
(b) \( 0.3 \mathrm{~m} \)
(c) \( 0.03 \mathrm{~m} \)
(d) \( 0.9 \mathrm{~m} \)
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