For the plane stress plate fixed along the left and right sides and subjected to a uniform temperature rise of 50°F as shown in Figure P15 -17, determine the stresses in each element. Let E = 10 × 106 psi, v = 0.30, α = 12.5 × 10-6 (in./in.)/°F, and t = 1/4 in. The coordinates (in inches) are shown in the figure.

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y 3 20 in. 2) 4 х - 40 in. 3.