Question

For equilibrium, the net moment acting on the body by various conservative forces is zero.

(a) True

(b) False

The question was asked by my college director while I was bunking the class.

The question is from Conservative Forces topic in section Principle of Virtual Work of Engineering Mechanics

Answer 1

Right choice is (a) True

The best I can explain: The equilibrium is only attained if the net moment on the body tends to be equal to zero. Thus the moments caused by different forces cancel out. If this happens there is no motion of the body along any direction and hence the body is said to be in equilibrium. The body here is a rigid body.