NEET Physics Friction MCQ Question
What effect does rolling friction have during motion?
It opposes motion by creating a finite area of contact.
It enhances motion by reducing the contact area.
It has no effect on the motion of rolling objects.
It only occurs when surfaces are perfectly smooth.
Correct Answer
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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