A space truss is restrained at joints A, B and C, as shown in the figure. Load 2P is applied at in the 2x direction at joint A, load 3P acts in the 1z direction at joint B, and load P is applied in the 1z direction at joint C. Coordinates of all joints are given in terms of dimension variable L.

(a) Find reaction force components Ay and Az in terms of load variable P.

(b) Find the axial force in truss member AB in terms of load variable P.

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C(0,2L, 4L) P Cy Cx B(0, 4L, 0) 4L 2 L 2 L By 3L 3P (+z direction) Bx 2P Az Ay A(3L, 0,0) X