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Coefficient of Static Friction

Definition

The coefficient of static friction is a value that represents the amount of force needed to overcome the static friction between two surfaces and initiate motion.

Analogy

Imagine trying to push a heavy box on the floor. The coefficient of static friction is like the initial resistance you feel when trying to move the box. It determines how hard you have to push before it starts sliding.

Related terms

Coefficient of Kinetic Friction: The coefficient of kinetic friction is a value that represents the amount of force required to keep two surfaces sliding against each other at a constant velocity.

Normal Force: The normal force is the perpendicular force exerted by a surface on an object in contact with it.

Frictional Force: Frictional force is the force that opposes motion between two surfaces in contact with each other.

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.