4. If the beam in the illustration below has a cross-section as shown below, compute the maximum and minimum bending stresses at a location 4.9 m from the right end of the beam. (The bending moment and shear force diagrams have been drawn for you. Also, make use of the symmetry of the cross when computed ) 1 23 mm 50 15. 2. Beam cross-section Shear force and bending moment diagrams