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The friction coefficient between the pla...

The friction coefficient between the plank and floor is `mu`. The man applies, the maximum possible force on the string and the system remains at rest. Then :

A

friction force between plank and surface is `(2 mu mg)/(1 +mu)`

B

frictional force on man is zero

C

tension in the string is `(2 mu mg)/(1 +mu)`

D

net force on man is zero

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The correct Answer is:
a,b,c,d
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