4.5-1 Sketch the shear force and bending moment diagrams for the beams shown in Fig. P4.5-1. As the first step in sketching the diagrams, write out the expression for the loading
q(x)
on the beam in terms of singularity functions; then integrate to obtain
V(x)
and
M(x)
. Clearly indicate all critical values and coordinate axes. Neglect the weight of the beams.(b)