Determine the reactions and bar forces that are created in the truss in Figure P9.30 when...

Determine the reactions and bar forces that are created in the truss in Figure P9.30 when the top chords (ABCD) are subjected to a 50°F temperature increase. Given: AE is constant for all bars. A = 10 in.², E = 30,000 kips/in.², and α = 6.5 × 10⁻⁶ (in./in.)/°F.

Figure P9.30: