Two blocks $A$ and $B$ of masses $3\,m$ and $m$ respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of $A$ and $B$ immediately after the string is cut, are respectively

534-93

  • [NEET 2017]
  • A

    $g,g$

  • B

    $\frac{g}{3},\frac{g}{3}$

  • C

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

  • D

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

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