Question

We use the method of a joint to find the forces acting over the joints in the space trusses. In this we start from the joint having at least one known force and at the most two unknown forces.

(a) The first part of the statement is false and other part is true

(b) The first part of the statement is false and other part is false too

(c) The first part of the statement is true and other part is false

(d) The first part of the statement is true and other part is true too

This question was addressed to me in an interview.

I need to ask this question from Space Trusses in section Structural Analysis of Engineering Mechanics

Answer 1

Correct option is (d) The first part of the statement is true and other part is true too

To explain I would say: This makes the calculations easy. Also for the solving of any equation one requires equal number of variables as that of equal number of an equation. So to do the calculations easily the above mentioned conditions are followed.