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A block of mass'm' is resting on the flo...

A block of mass'm' is resting on the floor of a lift. The coefficient of friction between the block and the floor is `mu`. When the lift is falling freely, the limiting frictional force between block and surface is

A

`mu mg`

B

`(mu mg)/(s)`

C

mg

D

zero

Text Solution

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The correct Answer is:
D
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