µs

Definition

The coefficient of static friction (µs) is a measure of the maximum amount of friction that can exist between two surfaces before one starts sliding relative to the other.

Related terms

Coefficient of kinetic friction: The coefficient of kinetic friction (µk) represents how much resistance there is between two surfaces in motion relative to each other.

Normal force: The normal force is the perpendicular force exerted by a surface on an object resting on it.

Static equilibrium: A state where an object remains at rest due to balanced forces acting on it.