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A lift is moving downwards with an accel...

A lift is moving downwards with an acceleration equal to `g`. A block of mass `m` , kept on the floor of the lift of friction coefficient `mu` , is pulled horizontally . The friction acting on the block is

A

`mu mg`

B

`mg`

C

zero

D

None

Text Solution

Verified by Experts

The correct Answer is:
C
The lift is falling freely `(a = g)`
`N = 0`
`f = 0`
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