An aluminum cantilever bm is 500 mm long and has a cross section as shown. All wall thicknesses are 5 mm. A lateral force of 2.0 kN in the nega- tive y direction is applied to the free end of the beam. For aluminum let E = 69 GPa. Determine

(a) the maximum tensile and compressive bending stresses.
(b) the maximum shear stresses in each web wall due to the transverse shear force in the section.
(c) the maximum bending deflection of the beam in the negative y direction