Fig. 50 shows the curve of bending moment under one of a series of travelling loads at fixed distances.
The second noteworthy result is that the curvature of the strained central-line is not proportional to the bending moment.
The front fork and steering post are subject to bending moment due to the reaction from the ground in the direction dcb.
Still harder application of the brake causes a bending moment in the opposite direction.
When no brake pressure is applied a bending moment due to the overhang ab is superimposed on these tubes.
The distribution of bending moment is given by the ordinates of a triangle.