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The three steel wires, each of cross-sectional area 0.05 in., support the weight W. Their unstressed lengths are 74.98 ft, 74.99 ft, and 75.00

The three steel wires, each of cross-sectional area 0.05 in., support the weight W. Their unstressed lengths are 74.98 ft, 74.99 ft, and 75.00 ft. (a) Find the stress in the longest wire if W = 1500 lb. (b) Determine the stress in the shortest wire if W = 500 lb. Use E = 29 x 106 psi. W

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