Physics 6A Ch5Worksheet

Physics 6A Ch5Worksheet - Physics 6A Ch. 5 In Class...

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Physics 6A Ch. 5 – In Class Worksheet - Friction Rules of thumb for static friction: 1) It takes on any value between zero and the maximum possible force of static friction, f s,max =u s N 2) It is independent of the area of contact between the surfaces 3) It is parallel to the surface of contact, and in the direction that opposes relative motion 4) Only applies when the surfaces in contact are at rest relative to each other. Which graph corresponds to the static friction as a function of the force applied, F x ? (F min = the min. force necessary for movement) Rules of Thumb for Kinetic Friction: 1) Proportional to the magnitude of the normal force, N, between the surfaces, f k =u k N 2) Independent of the relative speed of the surfaces 3) Independent of the area of contact between the surfaces 4) Always opposes the direction of motion. 5) Only applies if the surfaces in contact are moving relative to each other. Which graph on the right represents the
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Physics 6A Ch5Worksheet - Physics 6A Ch. 5 In Class...

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