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6.2 Friction - University Physics Volume 1 | OpenStax

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When a body is in motion, it has resistance because the body interacts with its surroundings. This resistance is a force of friction. Friction opposes relative motion between systems in contact but also allows us to move, a concept that becomes obvious if you try to walk on ice. Friction is a common yet complex force, and its behavior still not completely understood. Still, it is possible to understand the circumstances in which it behaves. The basic definition of friction is relatively simple to state. Friction is a force that opposes relative motion between systems in contact. There are several forms of friction. One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems and is always in a direction that opposes motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, friction slow

6.2 Friction - University Physics Volume 1 | OpenStax Skip to Content Go to accessibility page Keyboard shortcuts menu University Physics Volume 1 6.2 Friction University Physics Volume 1 6.2 Friction Contents Highlights Print Close 6.2 Friction By the end of this section, you will be able to: Describe the general characteristics of friction List the various types of friction Calculate the magnitude of static and kinetic friction, and use these in problems involving Newton’s laws of motion When a body is in motion, it has resistance because the body interacts with its surroundings. This resist

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