Physics-Friction

NEET Physics Friction MCQ Question

Type: MCQ-fact-Hard-Class 11

What effect does rolling friction have during motion?

A

It opposes motion by creating a finite area of contact.

B

It enhances motion by reducing the contact area.

C

It has no effect on the motion of rolling objects.

D

It only occurs when surfaces are perfectly smooth.

Correct Answer

Option A

Detailed Explanation

Rolling friction opposes motion due to the deformation of surfaces in contact, which increases the area of contact. This results in a component of the contact force that acts parallel to the surface and opposes motion.

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