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If pulleys shown in the diagram are smooth and
\( \mathrm{P} \)
massless and \( a_{1} \) and \( a_{2} \) are acceleration of blocks of
W
mass \( 4 \mathrm{~kg} \) and \( 8 \mathrm{~kg} \) respectively, then
(1) \( a_{1}=a_{2} \)
(2) \( a_{1}=2 a_{2} \)
(3) \( 2 a_{1}=a_{2} \)
(4) \( \quad a_{1}=4 a_{2} \)
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