The relationship among shearing force, bending moment, and load collection in theoretical mechanics is interconnected. The load on a beam affects the shearing force, which in turn affects the bending moment. The slope of a point in the shear diagram equals the load on that point of the beam, while the slope in the bending moment diagram equals the shearing force in that section of the beam. The curve's convexity or concavity in the moment diagram is determined by the direction of the distributed load on the beam.