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  3. 3 rigid member abd is supported by a pin joint...

Question: 3 rigid member abd is supported by a pin joint...

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3. Rigid member ABD Is supported by a pin joint at D and two pinned rods AE and CF. Rod AEIs aluminum (E 70 GPa, a 24E-6 1/C and a cross sectional area of 600 mm) and rod CF is steel (E - 200 GPa, a 12E-61/C and a cross sectional area of 300 mm). A load of 5 kN is applied downward at B. No load dimensions (in mm) are given as follows: AB -400, AD- 100, CD 250, AE 500, and CF 400. Subsequent to loading the temperature of rods AE and CF is increased by 20.C. Determine the axial stress in bars AE and CF,
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