Question

What are the property of friction?

Answer 1

• is essentially an electrostatic force between two surfaces
• never initiates motion; it only responds to motion
• depends on the types of materials that are in contact (µ - the coefficient of friction)
• depends on the net force normal pressing the two surfaces in contact (N)
• acts parallel to the surfaces that are (or might have the potential to be) moving with respect to each other
• opposes the direction of motion
• is independent of the area of the surfaces in contact