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A small disc A is placed on an inclined ...

A small disc A is placed on an inclined plane forming an angle `alpha` with the horizontal and is imparted an initial velocity `v_(0)`. Find how the velocity of the disc depends on the angle `theta`, shown in figure-2.209, if the friction coefficient `mu = tan alpha` and at the initial moment `theta=pi//2`

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The correct Answer is:
`[v=(v_(0))/(1+cosphi)]`
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PHYSICS GALAXY - ASHISH ARORA-NEWTONS LAWS OF MOTION-Unsolved Numerical Problem
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