Question

The coefficient of static friction between two surfaces depend on

• A. the nature of surface
• B. the shape of the surface in contact
• C. the area of contact
• D. all of the above

Answer 1

The correct option is A the nature of surface

Fact: Friction force depends on normal force between bodies and co-efficient of friction between bodies. As we know normal force doesn't depend on shape of surface or area of contact, friction co-efficient is only parameter which only depends on nature of surface, so we can say co-efficient of friction force depends on Nature of surface.