An aluminum layer is bonded to a plastic sheet for reinforcement. Take the plastic to have an elastic modulus of 2 GPa. The width of the plastic sheet is 40 mm with a thickness of h(plastic)=4 mm . The width of the aluminum sheet is 40 mm with a thickness of h(Al)=1 mm. Determine the maximum stresses in the plastic and aluminum if a bending moment of 5.0 N*m is applied.