Per NCERT §4.9.1 (rolling friction note), among rolling, sliding (kinetic), and static friction, which is typically LOWEST?
AKinetic friction
BAir resistance only
CRolling friction
DStatic friction
Answer & Solution
Correct answer: C. Rolling friction
NCERT §4.9.1 (Rolling friction box): rolling friction ≪ kinetic friction. Reason ball bearings + wheels are used to reduce friction.
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