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For the same pair of surfaces, how does the maximum value of static friction usually compare with the kinetic friction between them?
AIt is usually smaller than kinetic friction
BIt is always exactly equal to kinetic friction
CIt is usually greater than kinetic friction
DIt bears no relationship to kinetic friction
Answer & Solution
Correct answer: C. It is usually greater than kinetic friction
1. The source directly compares static and kinetic friction for the same surfaces.
2. It states that static friction is usually greater than kinetic friction between the surfaces.
3. This matches everyday experience: it takes more force to start an object sliding than to keep it sliding.
4. The two are related but not equal, so the equality option is ruled out.
_Source: OpenStax College Physics (CC BY 4.0), Ch 5 "Further Applications of Newton's Laws: Friction, Drag, and Elasticity", section 5.1 Friction_
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