The weight of a car, moving at a constant speed on a beam bridge, is modeled as a single...

The weight of a car, moving at a constant speed on a beam bridge, is modeled as a single concentrated load, as shown in Fig. P3.14. Determine the expressions for the vertical reactions at the supports in terms of the position of the car as measured by the distance x, and plot the graphs showing the variations of these reactions as functions of x.