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A block kept on a rough surface starts s...

A block kept on a rough surface starts sliding when the inclination of the surface is `theta` with respect to the horizontal . The coefficient of static friction between the block and the surface is

A

`sin theta`

B

`tan theta`

C

`cos theta`

D

`sec theta`

Text Solution

Verified by Experts

The correct Answer is:
b
The angle of inclined plane at which body just starts moving is called angle of repose `theta_(1)`, and coefficient of static friction is equal to tangent of angle of repose. i.e. `mu = tan theta`
So correct choice is (b).
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