Constructing the shear diagram
Considering the segment
from x = 3 m to x = 4 m
area under load
diagram = -20.00 kN
concentrated
forces = 0.00 kN
total shear force
change = -20.00 kN
at x = 3 m, V = +20.00 kN
total shear force
change = -20.00 kN
at x = 4 m, V = 0.00 kN