Objectives: Bodies in contact exert a force on each other. In the case of ideally smooth surfaces, this force acts perpendicularly to the contact plane. If the surfaces are rough, however, there may also be a tangential force component. Students will learn that this tangential component is a reaction force if the bodies adhere, and an active force if the bodies slip. After studying this chapter, students should be able to apply the Coulomb theory of friction to determine the forces in systems with contact.
KeywordsFriction Force Normal Force Reaction Force Static Friction Tangential Force
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