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A monkey of mass m moving up on a massle...

A monkey of mass m moving up on a massless string so as to just lift a block of mass M. After some time the monkey stops moving w.r.t the string. Find the magnitude of the change in the monkey's acceleration.

Text Solution

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When the monkey moves up with acceleration .a. to lift the block `m(g+a) = Mg`
`a=((M-m)g)/(m)`, when monkey stops
`a. =((M-m)g)/(M+m), therefore Deltaa = a-a. = (Mg(M-m))/(m(M+m))`
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