Basic Maths and Units and DimensionsHard

Question

A man of mass m stands on a platform of equal mass m and pulls himself by two ropes passing over pulleys as shown. If he pulls each rope with a force equal to half his weight, his upward acceleration would be :
    

Options

A.g/2
B.g/4
C.g
D.Zero

Solution

Let acceleration of man be ′a′ For man + platform system
        ⇒  a = 0

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