고체역학 (Gere) — Tension, Compression, and Shear: Problem 1.3-15

1.3-15 A space truss is restrained at joints A, B, and C, as shown in the figure. Load 2P is applied at joint A in the -x direction, load 3P acts in the +z direction at joint B, and load P is applied in the +z direction at joint C. Coordinates of all joints are given in terms of dimension variable L (see figure). (a) Find reaction force components \(A_y\) and \(A_z\) in terms of load variable P. (b) Find the axial force in truss member AB in terms of load variable P.