A sphere is resting on a horizontal surface with friction and starts rotating clockwise. A force of 15 N is applied on it as shown. What is the direction of frictional force on the sphere?

forwards

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backwards

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zero

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can not be determined

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Solution

The correct option is B backwards
As the sphere tries to rotate, it rotates clockwise. That torque is due to the frictional force acting backwards. Thus the frictional force on sphere acts in the backward direction.

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A sphere is resting on a horizontal surface with friction and starts rotating clockwise. A force of 15 N is applied on it as shown. What is the direction of frictional force on the sphere?

The correct option is B backwardsAs the sphere tries to rotate, it rotates clockwise. That torque is due to the frictional force acting backwards. Thus the frictional force on sphere acts in the backward direction.

The correct option is B backwards
As the sphere tries to rotate, it rotates clockwise. That torque is due to the frictional force acting backwards. Thus the frictional force on sphere acts in the backward direction.