Locations where the V curve crosses the V= 0 axis are important because they indicate O where the area of the bending moment diagram will be the least where the maximum or minimum bending moments will be O the region of the beam that is not thick enough O the largest forces on the horizontal axis O where there are no applied loads

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Bending Moment

In general, we can define the bending moment as the reaction induced when a certain amount of load or force is applied to an element which makes it bend.