A ball rests upon a flat piece of paper on a | vedclass

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(A) Case $(1)$: If there is no friction between the paper and the ball,the paper exerts no horizontal force on the ball. Due to the inertia of rest,th

Vedclass · Accepted Answer

Both $(1)$ and $(2)$

Vedclass · Answer

(A) Case $(1)$: If there is no friction between the paper and the ball,the paper exerts no horizontal force on the ball. Due to the inertia of rest,the ball remains at its initial position on the table.Case $(2)$: If there is friction between the paper and the ball,the paper exerts a kinetic frictional force on the ball in the direction of the paper's motion (to the right). This force acts at the point of contact. This creates a torque about the center of mass of the ball,causing it to rotate such that its bottom surface moves to the left relative to the table. Consequently,the ball starts rolling backwards (to the left) while the frictional force also provides a net acceleration to the left relative to the table.Therefore,both statements $(1)$ and $(2)$ are correct.

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