SITUATION. As shown in the figure below, a rigid bar with negligible mass is pinned at O and attached to two vertical rods. Assume that the rods were initially stress-free. Allowable stress in steel is 120 MPa and in bronze is 60 MPa. For this problem, a = 1.8m; b= 1.3m; c= 1.7m. a b Steel: A = 900 mm² Bronze: A=1200 mm² E = 83 GPa L=2.0m E= 200 GPa L=1.5m What is the value of P without exceeding the allowable stress of steel, in kN? O250 340 280 O230

Structural Analysis
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SITUATION. As shown in the figure below, a rigid bar with negligible mass is pinned at O and attached
to two vertical rods. Assume that the rods were initially stress-free. Allowable stress in steel is 120
MPa and in bronze is 60 MPa. For this problem, a = 1.8m; b = 1.3m; c= 1.7m.
b
C
P
Steel:
A = 900 mm²
Bronze:
A=1200 mm²
E = 83 GPa
L=2.0m
E= 200 GPa
L = 1.5m
What is the value of P without exceeding the allowable stress of steel, in kN?
250
340
280
O230
Transcribed Image Text:SITUATION. As shown in the figure below, a rigid bar with negligible mass is pinned at O and attached to two vertical rods. Assume that the rods were initially stress-free. Allowable stress in steel is 120 MPa and in bronze is 60 MPa. For this problem, a = 1.8m; b = 1.3m; c= 1.7m. b C P Steel: A = 900 mm² Bronze: A=1200 mm² E = 83 GPa L=2.0m E= 200 GPa L = 1.5m What is the value of P without exceeding the allowable stress of steel, in kN? 250 340 280 O230
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