Question

A solid sphere rolls without slipping on a rough horizontal surface under the action of a constant force F applied as shown. The direction and nature of friction are


1)Forward and static


2)Forward and kinetic


3)Backward and kinetic


4)Backward and static

Answer 1

Answer:

Forward and static friction

Answer 2

The correct option is 2) Forward and kinetic.

• When a solid sphere rolls without slipping on a rough horizontal surface, the friction force acts in the direction opposite to the motion of the sphere.
• In this case, the sphere is being pushed forward by the constant force F, so the friction force acts in the backward direction.
• The force of friction depends on the normal force and the coefficient of kinetic friction between the sphere and the surface.
• As the sphere moves forward, it acquires kinetic energy and starts to roll, so the friction force acts as a kinetic friction force, trying to slow down the sphere.
• The force of kinetic friction is proportional to the normal force and the coefficient of kinetic friction and opposes the direction of motion.
• So, the friction force in this case is backward and kinetic.

Therefore, the correct option is 2) Forward and kinetic.

To learn more about friction from the given link.

https://brainly.in/question/1182128

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