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Which of the following is true? (a)Total moment of various forces acting on the body is the vector sum of all moments

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Which of the following is true?

(a) Total moment of various forces acting on the body is the vector sum of all moments

(b) Total moment of various forces acting on the body is the algebraic sum of all moments

(c) Total moment of various forces acting on the body is always zero

(d) Total moment of various forces acting on the body is the vector sum of all moments which is perpendicular to each other forces

I got this question during a job interview.

The origin of the question is Moment of a Force topic in division Force System Resultants of Engineering Mechanics

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Right answer is (a) Total moment of various forces acting on the body is the vector sum of all moments

Explanation: The moment is the vector quantity. Thus the value of the total moment caused by various forces acting on the body is the vector sum of all the vectors. Also, the moments are not perpendicular to each other, unless it is specified. Thus assumptions cant be taken for the direction of the moment.

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