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The shear diagram will jump downward if the _________________

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The shear diagram will jump downward if the _________________

(a) Rotational moment

(b) Bending moment

(c) Total weight

(d) Force will act downwards

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Asked question is from Relation Between Distributed Load, Shear and Moment topic in chapter Internal Forces of Engineering Mechanics

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The correct option is (d) Force will act downwards

For explanation I would say: 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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