Determine maximum bending stresses

Constructing the moment diagram

Considering the segment
from x = 1.5 m to x = 2 m

     area under
                shear =  -5.00 kN-m
     concentrated
           moments =   0.00 kN-m
     total bending
            moment =   -5.00 kN-m

       at x = 1.5 m,    M =    +17.00 kN-m
           total bending
               moment   =    -5.00 kN-m
       at x = 2 m,      M =   +12.00 kN-m