If pulleys shown in the diagram are smooth and massless and $a_1$ and $a_2$ are acceleration of blocks of mass $4 \,kg$ and $8 \,kg$ respectively, then

212645-q

  • A

    $a_1=a_2$

  • B

    $a_1=2 a_2$

  • C

    $2 a_1=a_2$

  • D

    $a_1=4 a_2$

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