Bar BC is made of brass which has E = 90 GPa, a = 20 × 10¯6 /°C, and A = 500 mm² Bar ED is made of steel which has E = 200 GPa, a = 12 × 10-6 /°C, and A = 250 mm² . Assume that bar ABD is rigid. The temperature of BC is decreased by 25 °C and the temperature of DE is increased by 25 °C, causing bar ABD to rotate clockwise. E 250 тm Steel B Rigid D B' D' 250 тm 350 тm 300 тm Brass C 1. True or False: SBC = -8DE . Show your solution in your submission. Choose.. + 2. Determine the internal axial force of bar DE. kN
Bar BC is made of brass which has E = 90 GPa, a = 20 × 10¯6 /°C, and A = 500 mm² Bar ED is made of steel which has E = 200 GPa, a = 12 × 10-6 /°C, and A = 250 mm² . Assume that bar ABD is rigid. The temperature of BC is decreased by 25 °C and the temperature of DE is increased by 25 °C, causing bar ABD to rotate clockwise. E 250 тm Steel B Rigid D B' D' 250 тm 350 тm 300 тm Brass C 1. True or False: SBC = -8DE . Show your solution in your submission. Choose.. + 2. Determine the internal axial force of bar DE. kN
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![Bar BC is made of brass which has E = 90 GPa, a = 20 × 10¯6 /°C, and A = 500 mm² Bar ED is made of steel
which has E = 200 GPa, a = 12 × 10-6 /°C, and A = 250 mm² . Assume that bar ABD is rigid.
The temperature of BC is decreased by 25 °C and the temperature of DE is increased by 25 °C, causing bar ABD to
rotate clockwise.
E
250 тm
Steel
A
Rigid
B'
D'
250 тm
350 тm
300 тт
Brass
C
1. True or False: SBC =
-SDE. Show your solution in your submission.
12
Choose... +
2. Determine the internal axial force of bar DE.
kN](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa2da7f05-2eb8-4f5d-accc-f36f9f17ce64%2F23fb0ff6-6975-4893-ae76-1751e9dabbf8%2Ft4ldiv_processed.png&w=3840&q=75)
Transcribed Image Text:Bar BC is made of brass which has E = 90 GPa, a = 20 × 10¯6 /°C, and A = 500 mm² Bar ED is made of steel
which has E = 200 GPa, a = 12 × 10-6 /°C, and A = 250 mm² . Assume that bar ABD is rigid.
The temperature of BC is decreased by 25 °C and the temperature of DE is increased by 25 °C, causing bar ABD to
rotate clockwise.
E
250 тm
Steel
A
Rigid
B'
D'
250 тm
350 тm
300 тт
Brass
C
1. True or False: SBC =
-SDE. Show your solution in your submission.
12
Choose... +
2. Determine the internal axial force of bar DE.
kN
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