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

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Unformatted text preview: 5.123: a) See Exercise 5.38; F = k w (cos + k sin ). b) c) The expression for F is a minimum when the denominator is a maximum; the calculus is identical to that of Problem 5.77 (maximizing w for a given F gives the same result as minimizing F for a given w), and so F is minimized at tan = k . For k = 0.25, = 14.0, keeping an extra figure. ...
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This document was uploaded on 02/04/2008.

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