![]() 6.5: Friction (Part 2) Simple friction is always proportional to the normal force.Still, it is possible to understand the circumstances in which it behaves. ![]() Friction is a common yet complex force, and its behavior still not completely understood. 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. 6.4: Friction (Part 1) When a body is in motion, it has resistance because the body interacts with its surroundings.You can apply concepts from kinematics and dynamics to solve these. ![]()
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