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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 9 - Rotational Dynamics > A sphere has to purely roll upwards. At an instant when the velocity of sphere is v, frictional force acting on it is

A sphere has to purely roll upwards. At an instant when the velocity of sphere is v, frictional force acting on it is

A sphere has to purely roll upwards. At an instant when the velocity of sphere is v frictional force acting on it is