A load P will be supported by a structure consisting of a rigid bar ABCD, a polymer [E = 2,300 ksi; a = 2.9 × 10-6/°F] b

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A Load P Will Be Supported By A Structure Consisting Of A Rigid Bar Abcd A Polymer E 2 300 Ksi A 2 9 10 6 F B 1 (161.49 KiB) Viewed 23 times

A load P will be supported by a structure consisting of a rigid bar ABCD, a polymer [E = 2,300 ksi; a = 2.9 × 10-6/°F] bar (1) and an aluminum alloy [E = 10,000 ksi; a = 12.5 x 10-6/°F] bar (2), as shown. Each bar has a cross-sectional area of 2.00 in.². The bars are unstressed when the structure is assembled at 30°F. After a concentrated load of P = 42 kips is applied and the temperature is increased to 100°F, determine the normal force in bar (1). 6 ft 2.5 ft 3.10 kips O 2.71 kips O 4.17 kips O 3.63 kips O 4.42 kips (1) B 3 ft с P 8 ft 1.5 ft (2) D