Question: 8-9 ONLY. thanks. 8-9. Use the method of virtual work and determine the vertical displacement of joint H. Each steel member has a cross-sectional area
8-9 ONLY. thanks.

8-9. Use the method of virtual work and determine the vertical displacement of joint H. Each steel member has a cross-sectional area of 4.5 in2. Take E = 29(103) ksi. = 810. Solve Prob. 89 using Castigliano's theorem. H G F 9 ft A (E B C D 12 ft 12 ft 12 ft 12 ft- 6k 8k 6k Probs. 8-9/10
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