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A solid sphere of mas '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 sa that it starts sliding with a speed ' v '. Fin the time taken by the sphere to start pure rolling on the plank. The coeffient of friction between the plank and the sphere is


A solid sphere of mas '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 sa that it starts sliding with a speed ' v '. Fin the time taken by the sphere to start pure rolling on the plank. The coeffient of friction between the plank and the sphere is


Grade:9

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