A disc rolls without slipping on a rough horizontal floor.if velocity of its com is v, find velocity of point p , op=r/2 and angle qop = 60 degrees.

Velocity of any point is vector sum of velocity of COM and (distance from centre to that point X angular velocity-its horizontal component).
Actually, velocity of pont P is directed along tangentially, so we need to have its horizontal component that can be add to pure rolling velocity about the COM.
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