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A block is gently placed on a conveyor b...

A block is gently placed on a conveyor belt moving horizontal with constant speed After `t = 4s` the velocity of the block becomes equal to velocity of the belt If the coefficient of friction between the block and the belt is `mu = 0.2`, then the velocity of the conveyor belt is .

A

`8m//s`

B

`6m//s`

C

`4m//s`

D

`2m//s`

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The correct Answer is:
A
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