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A block of mass M is being pulley along ...

A block of mass `M` is being pulley along horizontal surface .The coefficient of friction the block and the surface is `mu` If another block of mass `M//2` is placed on the block and it is pulled is again pulled on the surface , the coefficient of friction the block and the surface will be

A

`mu`

B

`3mu//2`

C

`mu//2`

D

`2mu`

Text Solution

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The correct Answer is:
A
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