Question

The free body diagram of which part of the section of the space truss is made to make use of the method of joints?

(a) Joints

(b) Truss

(c) The whole structure

(d) The combination of joint and the whole structure

This question was posed to me in class test.

I'm obligated to ask this question of Space Trusses topic in section Structural Analysis of Engineering Mechanics

Answer 1

Correct choice is (a) Joints

To explain I would say: The free body diagram of joints part of the section of the truss is made to make use of method of joints. Various equations of equilibrium are made to do the calculations. The net force acting on the vertical direction is made zero. Also horizontal direction forces are made to be zero.