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A big block of mass M is placed on a hor...

A big block of mass M is placed on a horizontal surface. Two cubes each of mass m are attached with ideal string-pulley system as shown in figure. On ecube falls in the groove drilled into the block as shown. Assuming all the surfaces are smooth and system is released from rest, find instantaneous power developed by gravity. (consider M=2m). Assume that the system starts moving from rest at time t = 0 .

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Verified by Experts

The correct Answer is:
`( 4m g^(2) t )/( 7)`
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