Question

We first make equilibrium equations of the body by considering all the three dimensional forces and then the free body diagram is made and solved. Thus the criteria for the potential energy equilibrium.

(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 posed to me in a job interview.

My doubt stems from Potential Energy Criterion for Equilibrium topic in section Principle of Virtual Work of Engineering Mechanics

Answer 1

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

For explanation: We first make the free body diagram and then we make the equilibrium equations to satisfy the given conditions. This helps us to solve the question easily. As this reduces the part of imagination and increases accuracy too.