A mass $m$ hangs with the help of a string wrapped around a pulley on a frictionless bearing. The pulley has mass m and radius $R$. Assuming pulley to be a perfect uniform circular disc, the acceleration of the mass $m$, if the string does not slip on the pulley, is

  • [AIEEE 2011]
  • A

    $\;\frac{3}{2}g$

  • B

    $g$

  • C

    $\;\frac{2}{3}g$

  • D

    $\;\frac{g}{3}$

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