The (*) "static" version of this quantity is proportional to the normal force and independent of the area of contact.
The Stribeck curve gives this quantity as a function of steady-state velocity. Laws involving this quantity were first discovered by Leonardo da Vinci, but mathematically written two centuries later by Charles Coulomb. For a body on an incline, the coefficient associated with it is equal to the tangent of the incline angle. The (*) "static" version of this quantity is proportional to the normal force and independent of the area of contact. For 10 points, name this force that retards the motion of an object sliding along a solid surface.
The Stribeck curve gives this quantity as a function of steady-state velocity.
friction