A man of mass \( m \) stands on a platform of equal mass P \( m \) ...

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A man of mass \( m \) stands on a platform of equal mass
P \( m \) and pulls himself by two ropes passing over pulleys

W as shown in figure. If he pulls each rope with a force equal to half his weight, his upward acceleration would be
(1) \( \frac{g}{2} \)
(2) \( \frac{g}{4} \)
(3) \( g \)
(4) Zero
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