A body of mass m and radius r is rotated with angular velocity ω 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.
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B
forward first and then move backward.
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C
will always move forward.
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D
none of these.
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Solution
The correct option is D 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.