When a body of mass M slides down an inc...

When a body of mass M slides down an inclined plane of inclination `theta`, having coefficient of friction `mu` through a distance s, the work done against friction is :

`(mu Mg cos theta) s`

`( mu Mg sin theta) s`

`Mg(mu cos theta- sin theta) s`

None of the above

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Verified by Experts

The correct Answer is:

Work done against friction `= -`work done by friction `=(mu mg cos theta)s`.
Hence (A) is correct.

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