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The change in moment is equal to _________

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The change in moment is equal to _________

(a) Rotational moment

(b) Bending moment

(c) Total weight

(d) Area under the shear diagram

The question was posed to me in an interview for job.

This intriguing question originated from Relation Between Distributed Load, Shear and Moment topic in chapter Internal Forces of Engineering Mechanics

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Right choice is (d) Area under the shear diagram

To explain: After the application of the force equation of equilibrium to the segment of the beam, we have the above result. This is done on the very small part of the beam. That is the minimal section of the beam is to be considered and then the application of the equilibrium equations are done so as to calculate the final result.

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