Which of the following needs to zero for the perfect equilibrium for the calculation of the work?
(a) ∑F=0, ∑M=0 and ∑θ = 0
(b) ∑F=0, ∑M≠0 and ∑θ = 0
(c) ∑F≠0, ∑M=0 and ∑θ = 0
(d) ∑F=0, ∑M=0 and ∑θ≠0
The question was asked in an online quiz.
Enquiry is from Work topic in division Principle of Virtual Work of Engineering Mechanics