1. As shown in the figure, three wires with different areas and modulus of elasticity are used to lift a load W. Their unstressed lengths are L1, L2, and L3. (a) What stress exists in the longest wire, and (b) shortest wire? (c) Determine the stress in the shortest wire if W = 500 Ib. (d) What should be the load so that the two wires will stretch to the length of the longest wire

Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter1: Tension, Compression, And Shear
Section: Chapter Questions
Problem 1.9.13P: A metal bar AB of a weight Ills suspended by a system of steel wires arranged as shown in the...
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Modulus of Elasticity (psi)
E3
899.73 29000000 32000000 25000000
Length in Inches
Cross Sectional Area (in2)
Load (Ib)
SN
L3
L2
L1
E2
E1
АЗ
A2
A1
W
1
900.01
899.89
0.05
0.045
0.035
2130
Transcribed Image Text:Modulus of Elasticity (psi) E3 899.73 29000000 32000000 25000000 Length in Inches Cross Sectional Area (in2) Load (Ib) SN L3 L2 L1 E2 E1 АЗ A2 A1 W 1 900.01 899.89 0.05 0.045 0.035 2130
1. As shown in the figure, three wires with
different areas and modulus of elasticity are used
to lift a load W. Their unstressed lengths are L1,
L2, and L3. (a) What stress exists in the longest
wire, and (b) shortest wire? (c) Determine the
stress in the shortest wire if W = 500 Ib. (d) What
should be the load so that the two wires will
stretch to the length of the longest wire
Transcribed Image Text:1. As shown in the figure, three wires with different areas and modulus of elasticity are used to lift a load W. Their unstressed lengths are L1, L2, and L3. (a) What stress exists in the longest wire, and (b) shortest wire? (c) Determine the stress in the shortest wire if W = 500 Ib. (d) What should be the load so that the two wires will stretch to the length of the longest wire
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