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# The armature (slender rod) AB has a mass of 0.2 kg and can

ISBN: 9780133951929 123

## Solution for problem 17-84 Chapter 17

Engineering Mechanics: Statics & Dynamics | 14th Edition

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Problem 17-84

The armature (slender rod) AB has a mass of 0.2 kg and can pivot about the pin at A. Movement is controlled by the electromagnet E, which exerts a horizontal attractive force on the armature at B of FB = (0.2(10-3 )l -2 ) N, where l in meters is the gap between the armature and the magnet at any instant. If the armature lies in the horizontal plane, and is originally at rest, determine the speed of the contact at B the instant l = 0.01 m. Originally l = 0.02 m

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The armature (slender rod) AB has a mass of 0.2 kg and can

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