Question: m ( 1 0 marks ) 0 . 2 m 0 . 4 mSteel: E = 2 0 0 GPa, a = 1 1 .

m(10 marks)0.2 m0.4 mSteel: E=200 GPa, a =11.7\times 10 PCAluminum: E =72 GPa, a =22 x 10 FCCopper E =100 GPa, a =17.8\times 10*/Cd =25 mmSteeld =15 mmCopperd =20 mmAluminuma) Find the stresses induced in the members due to temperature rise from /20\deg C to 100\deg C).

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