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Q.A solid sphere of mass m and radius R is placed on a plank of equal mass,which lies on a smooth horizontal surface.The sphere is given a sharp impulse in the horizontal direction so that it starts sliding with a speed v.Find the time taken by the sphere to start pure rolling on the plank.the coefficient of friction between plank and sphere is u.


Q.A solid sphere of mass m and radius R is placed on a plank of equal mass,which lies on a smooth horizontal surface.The sphere is given a sharp impulse in the horizontal direction so that it starts sliding with a speed v.Find the time taken by the sphere to start pure rolling on the plank.the coefficient of friction between plank and sphere is u.


Grade:11

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