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
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
- 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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