Question

If two members of the structure (trusses) form a truss joint and there is no external force acting on that joint then the two members are called___________

(a) Scalar form of the force vector

(b) The equivalent vector of truss

(c) Zero moment member

(d) Zero force member

This question was posed to me in an online interview.

The query is from Zero Force Member topic in portion Structural Analysis of Engineering Mechanics

Answer 1

Right answer is (d) Zero force member

The best I can explain: If two members of the structure (trusses) forms a truss joint and there is no external force acting on that joint then the two members are called as zero force members. This is again came from inspection. If we imagine the same, we see that there are no movements, thus they are zero force members.