고체역학 (Gere) — Stresses in Beams (Advanced Topics): Problem 6.3-17

6.3-17 A wood beam reinforced using two channels is subjected to a positive bending moment \(M_z = 34 \text{ kN}\cdot\text{m}\). Calculate the largest tensile and compressive stresses in the wood and steel if \(E_w = 11 \text{ GPa}\) and \(E_s = 200 \text{ GPa}\).