A spring executes $SHM$ with mass of $10\,kg$ attached to it. The force constant of spring is $10\,N/m$.If at any instant its velocity is $40\,cm/sec$, the displacement will be .... $m$ (where amplitude is $0.5\,m$)

  • A

    $0.09$

  • B

    $0.3$

  • C

    $0.03$

  • D

    $0.9$

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