problem05_27

University Physics with Modern Physics with Mastering Physics (11th Edition)

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5.27: As in Example 5.17, the friction force is α μ μ cos k k w n = and the component of the weight down the skids is . sin α w In this case, the angle α is . 7 . 5 ) 0 . 20 00 . 2 arcsin( ° = The ratio of the forces is , 1 10 . 0 25 . 0 tan sin cos k k = = α μ α α μ so the friction force holds the safe back, and another force is needed to move the safe down the skids.
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