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A block sliding down on a rough 45^(@) i...

A block sliding down on a rough `45^(@)` inclined plane has half the velocity it would have been, the inclined plane is smooth. The coefficient of sliding friction between the block and the inclined plane is

A

`(1)/(4)`

B

`(3)/(4)`

C

`(1)/(2sqrt2)`

D

`(1)/(sqrt2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`v^(2)-u^(2)=2as`
`V_(R )=sqrt(2gl(sin theta-mu_(k)cos theta)), V_(S)=sqrt(2gl sin theta)`
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