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A sphere has to purely roll upwards. At an instant when the velocity of sphere is v, frictional force acting on it is
detailed solution
Correct option is D
In case of rolling upwards in the inclined plane, let say friction acts upwardsTranslation : mgsinθ-f=ma Rotation : fR=25mR2aR For sphere, k2=25R2 From Eqs. (i) and (ii), f=27mgsinθ (upwards)Talk to our academic expert!
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A homogeneous solid cylindrical roller of radius R and mass M is pulled on a cricket pitch by a horizontal force. Assuming rolling without slipping, angular acceleration of the cylinder is
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