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A carriage of mass M and length l is joi...

A carriage of mass M and length l is joined to the end of a slope as shown in the Fig 2E.81 (a). A block of mass m is released from the slope from height h. It slides till end of the carriage (The friction between the body and the slope and also friction between carriage and horizontal floor is negligible) Coefficient of friction between block and carriage is `mu`. Find ,minimum h in the given terms.

A

`mu (1+M/m)l`

B

`2mu(1+m/M)l`

C

`mu(2+m/M)l`

D

`mu(1+m/M)l`

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The correct Answer is:
d
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