For the cantilever beam illustrated at right, the magnitude of the forces applied at the free end of the beam are Fy =
1.8 kN, and Fz = 2.5 kN, and the directions are illustrated.
(a) Determine the stresses at each corner of the built-in end of the beam section [20 marks]. (b) Specify the orientation of the neutral axis relative to the principal centroidal axes of the section using a sketch [10 marks].