Figure 1 of 1 8 ft B P 8ft 6 ft ▾ Part A Review It P-8 kip, determine the vertical displacement of point B using Castigliano's theorem. Each A-36 steel member has a cross-sectional area of 4.5 in. (Figure 1) Express your answer with the appropriate units. (AB), Value Submit Request Answer ? Units < Return to Assignment Provide Feedback