Final answer:
The state law of limiting friction governs the magnitude of static friction force between two stationary materials. The coefficient of static friction depends on the surfaces in contact and represents the maximum friction before motion begins.
Step-by-step explanation:
The state law of limiting friction states that the magnitude of static friction force between two materials stationary relative to each other is determined using the coefficient of static friction. The coefficient of static friction is a unitless quantity that depends on the two surfaces in contact. The static friction force is always greater than or equal to the force applied to an object to prevent it from moving.
The coefficient of static friction is denoted as μs and can have a value between 0 and 1.0. It represents the maximum value of friction between two surfaces before motion begins. The coefficient of static friction depends on factors such as the roughness of the surfaces, the normal force between the surfaces, and any adhesives or fluids present.