Chapter 4, Problem 4/071 A space truss is constructed in the form of a cube with six diagonal members shown. Verify that the truss is internally stable. If the truss is subjected to the compressive forces P applied at F and D along the diagonal FD, determine the forces in members FE and EG. The forces are positive if in tension, negative if in compression. P E H 溆 C Answers: FE-> EG - P