pbm from irodov

IIT JEE Preparation › Mechanics questions › pbm from irodov

A small disc A is placed on an inclined plane forming an angle Î± with
the horizontal and is imparted an initial velocity v₀.Find how
the velocity of the disc depends on the angle Ï† if the friction coefficient k=tanÎ±. and at the initial moment Ï†₀=Ï€/2.

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