A force of 49 N acts tangentially at the highest point of a sphere (solid) of mass 20 kg , kept on a rough horizontal plane. If the sphere rolls without slipping, then the acceleration of the center of the sphere is

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Torque about bottom point ​ F × 2 r = I α 49 × 2 r = 5 7 ​ mr 2 α 14 = 4 r α ​ As sphere rolls without slipping ​ a = r α a = 4 14 ​ = 2 7 ​ = 3.5 m / s 2 ​

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