Question

A body of mass $m$ and radius $r$ is rotated with angular velocity $\omega$ as shown in the figure. Body is kept on a surface that has sufficient friction, then the body will move

• A. backward first and then move forward.
• B. forward first and then move backward.
• C. will always move forward.
• D. none of these.

Answer 1

Answer: (C)

will always move forward.

As the rolling body is kept on the surface it tries to push the ground backwards thereby gaining a frictional force in the forward direction. Since the only force acting on it is this frictional force, thus the body will always move in the forward direction.