The amount of frictional resistance to motion can be expressed in terms of the coefficient of friction: Friction force opposing motion Friction Coefficient = ------------------------------- Load @ right angles to surfaces The coefficient is roughly constant for any pair of surfaces.
(The amount of frictional resistance to motion; can be expressed; ) (Friction force; opposing; motion) (The coefficient; is; roughly constant for any pair of surfaces)
The amount of frictional resistance to motion Friction force The coefficient
can be expressed opposing is
motion
roughly constant for any pair of surfaces