Rigid bar ABCD is loaded and supported as shown. Steel [E = 28400 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar (1) has a cross-sectional area of 0.75 in.2 and bar (2) has a cross-sectional area of 0.45 in.2. After load P is applied, the strain in bar (1) is found to be 850 μεμε. Assume L1=53 in., L2=79 in., a=34 in., b=33 in., and c=30 in. Determine:
Rigid bar ABCD is loaded and supported as shown. Steel [E = 28400 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar (1) has a cross-sectional area of 0.75 in.2 and bar (2) has a cross-sectional area of 0.45 in.2. After load P is applied, the strain in bar (1) is found to be 850 μεμε. Assume L1=53 in., L2=79 in., a=34 in., b=33 in., and c=30 in. Determine:
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Rigid bar ABCD is loaded and supported as shown. Steel [E = 28400 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar (1) has a cross-sectional area of 0.75 in.2 and bar (2) has a cross-sectional area of 0.45 in.2. After load P is applied, the strain in bar (1) is found to be 850 μεμε. Assume L1=53 in., L2=79 in., a=34 in., b=33 in., and c=30 in. Determine:
(a) the stresses in bars (1) and (2).
(b) the vertical deflection vD of point D on the rigid bar.
(c) the load P.
![Rigid bar ABCD is loaded and supported as shown. Steel [E = 28400 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar
(1) has a cross-sectional area of 0.75 in.² and bar (2) has a cross-sectional area of 0.45 in.². After load P is applied, the strain in bar (1) is
found to be 850 μe. Assume L₁-53 in., L₂-79 in., a-34 in., b-33 in., and c-30 in. Determine:
(a) the stresses in bars (1) and (2).
(b) the vertical deflection VD of point D on the rigid bar.
(c) the load P.
(2)
(1)
LI
B
C
A
Answers:
(a) σ₁ =
(b) VD =
(c) P=
i
i
L2
b
ksi, 0₂ =
in.
kips.
i
D
P
ksi.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0340ab0c-e54f-482a-bc54-4a3b868cdaba%2Fc0f942ce-c29f-4dd1-82eb-0789de82d055%2Fh3kw2er_processed.png&w=3840&q=75)
Transcribed Image Text:Rigid bar ABCD is loaded and supported as shown. Steel [E = 28400 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar
(1) has a cross-sectional area of 0.75 in.² and bar (2) has a cross-sectional area of 0.45 in.². After load P is applied, the strain in bar (1) is
found to be 850 μe. Assume L₁-53 in., L₂-79 in., a-34 in., b-33 in., and c-30 in. Determine:
(a) the stresses in bars (1) and (2).
(b) the vertical deflection VD of point D on the rigid bar.
(c) the load P.
(2)
(1)
LI
B
C
A
Answers:
(a) σ₁ =
(b) VD =
(c) P=
i
i
L2
b
ksi, 0₂ =
in.
kips.
i
D
P
ksi.
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