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

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5.5: With the positive y -direction up and the positive x -direction to the right, the free- body diagram of Fig. 5.4(b) will have the forces labeled n and T resolved into x - and y - components, and setting the net force equal to zero, . 0 sin cos 0 sin cos = - + = = - = w T n F n T F y x α Solving the first for
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Unformatted text preview: α T n cot = and substituting into the second gives w T T T T = = + = + sin sin sin sin cos sin sin cos 2 2 2 and so , cos cot sin cot α = α α = α = w w T n as in Example 5.4....
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