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

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(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.

Similar Questions

$A$ mass $2 \sqrt{3} \,kg$ is acted upon by two forces which are inclined to each other at $60^{\circ}$ and each of magnitude $1 \,N$. The acceleration of that mass in $SI$ system is $\left[\sin 30^{\circ}=\cos 60^{\circ}=0.5\right]$ (in $\,m / s^{2}$)

Two fixed frictionless inclined planes making an angle $30^\circ$ and $60^\circ$ with the vertical are shown in the figure. Two blocks $A$ and $B$ are placed on the two planes. What is the relative vertical acceleration of $A$ with respect to $B$?

If the net force on a system is zero,then:

$A$ particle initially at rest is subjected to two forces. One is constant,the other is a retarding force proportional to the particle velocity. In the subsequent motion of the particle,

Vedclass Test Series

Exam Paper Generator

Online Exam Module