Question

For stability of equilibrium configuration the net force acting on the body is zero.

(a) True

(b) False

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This is a very interesting question from Stability of Equilibrium Configurations in portion Principle of Virtual Work of Engineering Mechanics

Answer 1

Right answer is (a) True

Explanation: The equilibrium is only attained if the net force on the body tends to be equal to zero. Thus the forces cancels 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.