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

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in Engineering Mechanics by (701k points)
For equilibrium, the net moment acting on the body by various forces is zero.

(a) True

(b) False

This question was addressed to me in an international level competition.

My doubt is from Conditions for a Rigid-Body Equilibrium topic in portion Equilibrium of a Rigid Body of Engineering Mechanics

1 Answer

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The correct option is (a) True

The best explanation: 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 with any direction and hence the body is said to be in equilibrium. The body here is a rigid body.

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