Identical steel bars are used to support a 7400-N load as shown. For the properties of steel bar: A = 500 mm, a = 11.7 x 106 m/ (mºC), and E = 200 GPa. Determine the load exerted by steel bars A and B after a temperature increase of 72 °C. Also, calculate the total elongation sustained by bars A and B. ( 0.80 m 58 18 7400 N 18

Q: 600 b 20 A 20 20 E 20- 400 b 1000 lb

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