A load P will be supported by a structure consisting of a rigid bar ABCD, a polymer [E = 2,300 ksi; a = 2.9 x 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 = 40 kips is applied and the temperature is increased to 100°F, determine the normal force in bar (1). 6 ft 2.5 ft 4.53 kips O 4.26 kips 5.80 kips O 3.50 kips O 5.48 kips (1) B 3 ft 8 ft 1.5 ft (2) D
A load P will be supported by a structure consisting of a rigid bar ABCD, a polymer [E = 2,300 ksi; a = 2.9 x 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 = 40 kips is applied and the temperature is increased to 100°F, determine the normal force in bar (1). 6 ft 2.5 ft 4.53 kips O 4.26 kips 5.80 kips O 3.50 kips O 5.48 kips (1) B 3 ft 8 ft 1.5 ft (2) D
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Thumbs-up will be given. Write the complete solutions legibly. No long explanation needed. Solve in 3 decimal places. Box the final answer.
![A load P will be supported by a structure consisting of a rigid bar ABCD, a polymer [E = 2,300 ksi; a = 2.9 x 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 = 40 kips is applied and the temperature is
increased to 100°F, determine the normal force in bar (1).
6 ft
2.5 ft
4.53 kips
O 4.26 kips
5.80 kips
O 3.50 kips
O 5.48 kips
(1)
B
3 ft
8 ft
1.5 ft
(2)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffa9bbfd7-7241-43b8-ab88-f4c3219649d8%2F6b832c04-2473-4e9d-a371-7bca49c4ef9b%2Finwwdrw_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A load P will be supported by a structure consisting of a rigid bar ABCD, a polymer [E = 2,300 ksi; a = 2.9 x 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 = 40 kips is applied and the temperature is
increased to 100°F, determine the normal force in bar (1).
6 ft
2.5 ft
4.53 kips
O 4.26 kips
5.80 kips
O 3.50 kips
O 5.48 kips
(1)
B
3 ft
8 ft
1.5 ft
(2)
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