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A block of mass M is placed on a rough h...

A block of mass M is placed on a rough horizontal surface. It is connected by means of a light inextensible string passing over a smooth pulley . The other end of string is connected to a block of mass m. There is no friction between vertical surface and block m

The minimum value of coefficient of friction `mu` such that system remains at rest , is

A

` (m+M)/m`

B

`M/m`

C

`m/M`

D

`m/(M+m)`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • A block of mass m is placed on a rough horizontal surface. If minimum force to pull the block is (mg)/(2) then coefficient of friction is :

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    `(1)/(2)`
    B
    `sqrt3`
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    D
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    `(m)/(M + m )g`
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