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in JEE by (130 points)

A boy and a block both of same mass, are suspended at the same horizontal level from each end of a light string that moves over a frictionless pulley as shown. The boy starts moving upwards with an acceleration of 2.5 m/srelative to the rope. If the block is to travel a total distance 10 m before reaching at the pulley, the time taken by the block in doing so is equal to :

1 Answer

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Applying newton's 2nd law of motion, you will get the answer as time = 4s

by (130 points)
Please explain in detail with solution

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