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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