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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A solid sphere rolls on a smooth horizontal surface at 10 m/s and then rolls up a smooth inclined plane of inclination 30∘ with horizontal. The mass of the sphere is 2 kg. Find the height attained by the sphere before it stops (in m).

A solid sphere rolls on a smooth horizontal surface at 10 m/s and then rolls up a smooth inclined plane of inclination 30∘ with horizontal. The mass of the sphere is 2 kg. Find the height attained by the sphere before it stops (in m).

A rolling body of mass m = 4 k g radius R and radius of gyration k = R / √ 3 is placed as a plank which moves with an acceleration a 0 = 1 m /s^2 . Find the frictional force acting on the body if it rolls without sliding(in N ).