A cantilever beam 1.5 m long has a square box cross section with the outer width and height being 100 mm and a wall thickness of 8 mm. The beam car- ries a uniform load of 6.5 kN/m along the entire length and, in the same direc- tion, a concentrated force of 4 kN at the free end.
(a) Determine the maximum bending stress.
(b) Determine the maximum transverse shear stress.
(c) Determine the maximum shear stress in the beam