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Linear Kinetics: The Study of Force and Movement

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Friction

Figure 9.9 A block of wood resting on a table. It has a mass of 10 kg and a force of 20 N is required to move the wood along the surface. The coefficient of friction is 0.2

Figure 9.10 A force is applied to a stationary object to initiate movement. At point a the force required to initiate movement is achieved (limiting friction). Since µs < µI, the graph indicates however that less force is required to keep the object moving

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