A rod of constant cross-section is tightly clamped between two rigid supports as shown in Fig. 13.66. After clamping the temperature of rod is incressed by \(60^{\circ} \mathrm{C}\). Calculate the stresses in two parts of the rod. \(E_{s}=200 \mathrm{GPa} . E_{c}=100 \mathrm{GPa}, \alpha_{s}=12 \times 10^{-6}\) per \({ }^{\circ} \mathrm{C}\), and \(\alpha_{c}=15 \times 10^{-6}\) per \({ }^{\circ} \mathrm{C}\).

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Copper Steel 1 m. Fig. 13.66 2 m 10 mm