Two aluminum alloy plates (2) are attached to the sides of a wood beam (1). Dimensions for the composite cross section are b₁ = 86 mm, d₁ = 280 mm, b₂ = 9 mm, d₂ = 110 mm, and a = 85 mm. Determine the maximum bending stresses produced in both the wood beam and the aluminum plates if a bending moment of M₂ = +6300 N-m is applied about the z axis. Assume E₁ = 12.6 GPa and E₂ = 69 GPa. d₂ Part 1 N Answer: n = i b₁ (1) Calculate the modular ratio for the cross-section in order to transform the aluminum into an equivalent amount of wood. Save for Later e Textbook and Media (2) d₁ ܟܒܢܫ Submit Answer