Physics · Friction

Which of the following statements about friction is true?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Frictional force can be reduced to absolute zero in real practices.
2Frictional force can never act in the direction of motion of a body.
3Frictional force is directly proportional to the surface area of contact between two bodies.
4Kinetic friction is always greater than rolling friction for a given pair of surfaces.✓

Correct answer

Kinetic friction is always greater than rolling friction for a given pair of surfaces.

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