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A block has been placed on an inclined p...

A block has been placed on an inclined plane with the slope angle `theta`. Block slide down the plane at constant speed. The cofficient of Kinetic friction is equal to

A

`sin theta`

B

`cos theta`

C

`g`

D

`tan theta`

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Verified by Experts

The correct Answer is:
d
When the block slides down the inclined plane with constant speed the inclination of the plane with horizontal is equal to the angle of repose
`R =mg cos theta`
`F = mu R = mg sin theta`
Dividing (ii) by (i) we get
`mu = tan theta`
.
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