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A block is kept on an inclined plane of ...

A block is kept on an inclined plane of inclination `theta` of length l. the velocity of particle at the bottom of inclined is (the coefficient of friciton is `mu`)

A

`sqrt(2gl (mu cos theta - sin theta))`

B

`sqrt(2gl (sin theta - mu cos theta))`

C

`sqrt(2g (sin theta + mu cos theta))`

D

`sqrt(2g (cos theta + mu sin theta))`

Text Solution

Verified by Experts

The correct Answer is:
B
`a = g (sin theta - mu cos theta) , s = 1`
`v^(2) = u^(2) + 2as , ` u = 0
`implies v = sqrt(2as) = sqrt(2g l (sin theta - mu cos theta))`
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