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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

`2 mu`

D

`(5mu)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
a
Coefficient of friction is independent of the normal reaction Hence ,if will remain same
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