Question

Method of section cuts the whole structure of trusses into a section and then uses the cut out portion for the calculations of the unknown forces. For this method, at most two forces must be collinear.

(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

I got this question in an interview.

The above asked question is from Method of Sections topic in chapter Structural Analysis of Engineering Mechanics

Answer 1

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

The best I can explain: Method of section cuts the whole structure of trusses into a section and then uses the cut out portion for the calculations of the unknown forces. For this method, we don’t require two forces to be collinear. But if the forces are collinear than the task of determining the unknown forces is very easy.