For The Plane Truss Shown In Figure P15 3 Bar

For the plane truss shown in Figure P15 -3, bar element 2 is subjected to a uniform temperature rise of T = 60 °F. Let E = 30 × 106 psi, A = 2 in2, and a = 7.0 × 10-6 (in./in.)/ °F. The lengths of the truss elements are shown in the figure. Determine the stresses in each bar.

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