6. Three wires are used to support the 150-lb force. The wires AB and AC are made of steel, and wire AD is made of copper. Assume that the three wires have constant cross-sectional area A = 0.0123 in?. For steel wire, a = 8 x 106 in/ (in°F ) and E = 29000 ksi and for copper wire, a = 9.6 x 106 in/ (in°F ) and E = 17000 ksi. Calculate the axial force exerted by the three wires if the temperature is raised by 80°F. Answer: Pst = 10 lb, Pcu = 136 lb B HD 40 in. 60 in. 45° 45° 60 in. A

6. Three wires are used to support the 150-lb force. The wires AB and AC are made of steel, and wire AD is made of copper. Assume that the three wires have constant cross-sectional area A = 0.0123 in?. For steel wire, a = 8 x 106 in/ (in°F ) and E = 29000 ksi and for copper wire, a = 9.6 x 106 in/ (in°F ) and E = 17000 ksi. Calculate the axial force exerted by the three wires if the temperature is raised by 80°F. Answer: Pst = 10 lb, Pcu = 136 lb B HD 40 in. 60 in. 45° 45° 60 in. A

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.4.6P: Three prismatic bars, two of material A and one of material B. transmit a tensile load P (see...

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