Questions  

A block of mass M is being pulled along rough horizontal surface. The coefficient of friction between the block & surface is μ If another block of mass M/2 is placed on the block & it is again pulled on the surface. The coefficient of friction between the block and surface will be

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By Expert Faculty of Sri Chaitanya
a
μ
b
3μ/2
c
μ/2
d
2μ
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detailed solution

Correct option is A

μ depends on nature of surface only, here the coefficient friction between block and surface will remain asμ , even another block is placed on the first block.

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