Bending stress in a beam with overhang

Constructing the shear diagram

Considering the segment
from x = 2 m to x = 4 m

 area under load
        diagram =      0.00 kN
 concentrated
           forces =      0.00 kN
 total shear force
         change =      0.00 kN

    at x = 2 m,       V =   +15.60 kN
 total shear force
             change   =       0.00 kN
    at x = 4 m,       V =   +15.60 kN