$A$ uniform cylinder of mass $m$ can rotate freely about its own axis which is horizontal.$A$ particle of mass mo hangs from the end of a light string wound round the cylinder which does not slip over it. When the system is allowed to move, the acceleration of the descending mass will be

  • A

    $\frac{{2{m_o}g}}{{m + 2{m_o}}}$

  • B

    $\frac{{{m_o}g}}{{m + {m_o}}}$

  • C

    $\frac{{2{m_o}g}}{{m + {m_o}}}$

  • D

    $\frac{{{m_o}g}}{{2m + {m_o}}}$

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