A mass $M$, attached to a horizontal spring, executes S.H.M. with amplitude $A_1$. When the mass $M$ passes through its mean position then a smaller mass $m$ is placed over it and both of them move together with amplitude $A_2$. The ratio of $\frac{{{A_1}}}{{{A_2}}}$ is

  • [AIEEE 2011]
  • A

    $\frac{M}{{M + m}}\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;\;$

  • B

    $\;\frac{{M + m}}{M}$

  • C

    ${\left( {\;\frac{M}{{M + m}}} \right)^{\frac{1}{2}}}$

  • D

    ${\left( {\;\frac{{M + m}}{M}} \right)^{\frac{1}{2}}}$

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