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A trolley of mass M is attached to a blo...

A trolley of mass M is attached to a block of mass m by a string passing over a frictionless pulley as shown in the figure. If the coefficient of friction between the horizontal surface and wheels of trolley is `mu`, then acceleration of the block m and that of trolley M on releasing the system is :-

A

`((muM-m)/(m+muM))g`

B

`((m+muM)/(muM-m))g`

C

`((mum-M)/(m+M))g`

D

`((m-muM)/(m+M))g`

Text Solution

Verified by Experts

The correct Answer is:
D
`a="net force"/"net mass"`
`a=(mg-f_s)/(m+M)`
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