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Using the method of Section 10.8, solve 10.39. Determine whether the equilibrium is

Vector Mechanics for Engineers: Statics | 10th Edition | ISBN: 9780077402280 | Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek ISBN: 9780077402280 491

Solution for problem 10.73 Chapter 10

Vector Mechanics for Engineers: Statics | 10th Edition

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Vector Mechanics for Engineers: Statics | 10th Edition | ISBN: 9780077402280 | Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek

Vector Mechanics for Engineers: Statics | 10th Edition

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Problem 10.73

Using the method of Section 10.8, solve 10.39. Determine whether the equilibrium is stable, unstable, or neutral. (Hint: The potential energy corresponding to the couple exerted by a torsion spring is 2 1 2 , K where K is the torsional spring constant and is the angle of twist.) PROBLEM 10.39 The lever AB is attached to the horizontal shaft BC that passes through a bearing and is welded to a fixed support at C. The torsional spring constant of the shaft BC is K; that is, a couple of magnitude K is required to rotate end B through 1 rad. Knowing that the shaft is untwisted when AB is horizontal, determine the value of corresponding to the position of equilibrium when P = 100 N, l = 250 mm, and 12.5 N m/rad.

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Textbook: Vector Mechanics for Engineers: Statics
Edition: 10
Author: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek
ISBN: 9780077402280

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Using the method of Section 10.8, solve 10.39. Determine whether the equilibrium is