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The rigid bar ABCD is supported by a pin at B and restrained by identical steel bars at C and D, each of area 250mm

  • The rigid bar ABCD is supported by a pin at B and restrained by identical steel bars at C and D, each of area 250mm2. If the temperature is increased by 80C°, determine the force P that will cause the bar at C to be stress-free. Use E = 200 GPa and 12x10-6/C°.

  

3 m 0.8 m +0.6 m B

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