고체역학 (Gere) · Stresses in Beams (Basic Topics) · Problem 5.5-9
고체역학 (Gere) — Stresses in Beams (Basic Topics): Problem 5.5-9
5.5-9 A seesaw weighing 45 N/m of length is occupied by two children, each weighing 400 N (see figure). The center of gravity of each child is 2.5 m from the fulcrum. The board is 6 m long, 200 mm wide, and 40 mm thick. What is the maximum bending stress in the board?
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