고체역학 (Gere) — Tension, Compression, and Shear: Problem 1.3-14

1.3-14 A space truss is restrained at joints O, A, B, and C, as shown in the figure. Load P is applied at joint A and load 2P acts downward at joint C. (a) Find reaction force components Ax, By, and Bz in terms of load variable P. (b) Find the axial force in truss member AB in terms of load variable P.