2.50 Before the 400-kN load is applied, the rigid platform rests on two steel bars, each of cross-sectional area 1400 mm², as shown in the figure. The cross-sectional area of the aluminum bar is 2800 mm². Compute the stress in the aluminum bar after the 400-kN load is applied. Use E = 200 GPa for steel and E = 70 GPa for alumi- num. Neglect the weight of the platform. | 400 kN 0.1 mm -b b - A B C G -1.2b- FIG. P2.49 FIG. P2.50 Steel Aluminum Steel 250 mm-
2.50 Before the 400-kN load is applied, the rigid platform rests on two steel bars, each of cross-sectional area 1400 mm², as shown in the figure. The cross-sectional area of the aluminum bar is 2800 mm². Compute the stress in the aluminum bar after the 400-kN load is applied. Use E = 200 GPa for steel and E = 70 GPa for alumi- num. Neglect the weight of the platform. | 400 kN 0.1 mm -b b - A B C G -1.2b- FIG. P2.49 FIG. P2.50 Steel Aluminum Steel 250 mm-
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
![2.50 Before the 400-kN load is applied, the rigid platform rests on two steel bars,
each of cross-sectional area 1400 mm², as shown in the figure. The cross-sectional
area of the aluminum bar is 2800 mm². Compute the stress in the aluminum bar after
the 400-kN load is applied. Use E = 200 GPa for steel and E = 70 GPa for alumi-
num. Neglect the weight of the platform.
| 400 kN
0.1 mm
-b b -
A
B
C
G
-1.2b-
FIG. P2.49
FIG. P2.50
Steel
Aluminum
Steel
250 mm-](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff8949de6-84d4-462d-a005-94c349052278%2F9852cb7b-7191-43e0-bded-61b1bb16d8f6%2Fm4wk6xk_processed.png&w=3840&q=75)
Transcribed Image Text:2.50 Before the 400-kN load is applied, the rigid platform rests on two steel bars,
each of cross-sectional area 1400 mm², as shown in the figure. The cross-sectional
area of the aluminum bar is 2800 mm². Compute the stress in the aluminum bar after
the 400-kN load is applied. Use E = 200 GPa for steel and E = 70 GPa for alumi-
num. Neglect the weight of the platform.
| 400 kN
0.1 mm
-b b -
A
B
C
G
-1.2b-
FIG. P2.49
FIG. P2.50
Steel
Aluminum
Steel
250 mm-
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