The weight is suspended from steel and aluminum wires, each having the same initial length of 3

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The weight is suspended from steel and aluminum wires, each having the same initial length of 3 m and cross-sectional area of 4 mm2. If the materials can be assumed to be elastic perfectly plastic, with (σY)st= 120 MPa and (σY)al= 70 MPa, determine the force in each wire if the weight is

(a) 600 N

(b) 720 N. Eal = 70 GPa, Est = 200 GPa.

Aluminum Steel

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Mechanics of Materials

ISBN: 978-0134319650

10th edition

Authors: Russell C. Hibbeler

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