Question

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

(a) Joints

(b) Truss

(c) The whole structure

(d) The combination of joint and the whole structure

The question was posed to me by my school teacher while I was bunking the class.

The query is from Method of Joints topic in section Structural Analysis of Engineering Mechanics

Answer 1

Right answer is (a) Joints

The explanation is: 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.