Calculate the stresses in the bar shown in Fig. 13.67. if its temperature is raised by \(40^{\circ}\) C. \(E_{s}=2 E_{c}=200 \mathrm{GPa}, \alpha_{s}=12.5 \times 10^{-6} \mathrm{per}^{\circ} \mathrm{C}\), and \(\alpha_{c}=17.5 \times 10^{-6}\) per \({ }^{\circ} \mathrm{C}\).

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Copper 150 mm Steel 100 mm. 1.5m Fig. 13.67 -1m . 0.3 mm