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The three member forces apply three different moments and the two members apply two different moments on the body.

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The three member forces apply three different moments and the two members apply two different moments on the body.

(a) True

(b) False

The question was posed to me in an international level competition.

This intriguing question originated from Two and Three Force Members in chapter Equilibrium of a Rigid Body of Engineering Mechanics

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The correct option is (b) False

The explanation: Never judge the application of the moment of the force applied on the body by the number of the forces being acted on the body. What is two of the forces becomes collinear and are having a zero distance from the axis of rotation. Thus the three and two force member apply moments according to the situation, whether the distance is zero or not.

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