Question

The free diagram of the section of the truss is made for the section having the least number of the forces. This is done as to make the calculations easy.

(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 had been asked this question in my homework.

This intriguing question originated from Method of Sections topic in portion Structural Analysis of Engineering Mechanics

Answer 1

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

Best explanation: The part of the calculation is made easier if the flow diagram of that section is made which is having the least number of forces. Thus for the sake of the calculation this is done. Or one can say that for getting the unknown force we use this method.