5. The rigid bar is supported by a smooth pin and two rods as shown. Neglect the weight of the rigid bar.The assembly is initially stress-free. Determine the stress in each rod if the temperature increases by 25°Cafter a load W = 100 kN is applied. The steel rod has an area of 320 mm² with a = 11.7 µm/ (m°C) and E= 200 GPa. For the bronze rod, it has an area of 1380 mm² with a = 18.9 μm/ ( mºC) and E = 83 GPa.Bronze 3 mSteel 1.5 m1.0 m -Ok2.5 m1.5 mW6. Three wires are used to support the 150-lb force. The wires AB and AC are made of steel, and wire ADis made of copper. Assume that the three wires have constant cross-sectional area A = 0.0123 in². Forsteel wire, a = 8 x 106 in/ (inºF) and E = 29000 ksi and for copper wire, a = 9.6 x 10-6 in/ (inºF) and E =17000 ksi. Calculate the axial force exerted by the three wires if the temperature is raised by 80°F.Answer: Pst = 10 lb, Pcu = 136 lbBD40 in.60 in.45°-45°60 in.A150 lb

Answered: Image /qna-images/answer/7bd7b654-614b-48c6-a140-b9b1a9e11d47.jpg

5. The rigid bar is supported by a smooth pin and two rods as shown. Neglect the weight of the rigid bar. The assembly is initially stress-free. Determine the stress in each rod if the temperature increases by 25°C after a load W = 100 kN is applied. The steel rod has an area of 320 mm² with a = 11.7 µm/ (m°C) and E = 200 GPa. For the bronze rod, it has an area of 1380 mm² with a = 18.9 μm/ (m°C) and E = 83 GPa. Bronze 3 m Steel 1.5 m 1.0 m 2.5 m O W -1.5 m

5. The rigid bar is supported by a smooth pin and two rods as shown. Neglect the weight of the rigid bar. The assembly is initially stress-free. Determine the stress in each rod if the temperature increases by 25°C after a load W = 100 kN is applied. The steel rod has an area of 320 mm² with a = 11.7 µm/ (m°C) and E = 200 GPa. For the bronze rod, it has an area of 1380 mm² with a = 18.9 μm/ (m°C) and E = 83 GPa. Bronze 3 m Steel 1.5 m 1.0 m 2.5 m O W -1.5 m

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

5. The rigid bar is supported by a smooth pin and two rods as shown. Neglect the weight of the rigid bar.
The assembly is initially stress-free. Determine the stress in each rod if the temperature increases by 25°C
after a load W = 100 kN is applied. The steel rod has an area of 320 mm² with a = 11.7 µm/ (m°C) and E
= 200 GPa. For the bronze rod, it has an area of 1380 mm² with a = 18.9 μm/ ( mºC) and E = 83 GPa.
Bronze 3 m
Steel 1.5 m
1.0 m -
O
k
2.5 m
1.5 m
W
6. Three wires are used to support the 150-lb force. The wires AB and AC are made of steel, and wire AD
is made of copper. Assume that the three wires have constant cross-sectional area A = 0.0123 in². For
steel wire, a = 8 x 106 in/ (inºF) and E = 29000 ksi and for copper wire, a = 9.6 x 10-6 in/ (inºF) and E =
17000 ksi. Calculate the axial force exerted by the three wires if the temperature is raised by 80°F.
Answer: Pst = 10 lb, Pcu = 136 lb
B
D
40 in.
60 in.
45°-45°
60 in.
A
150 lb

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