고체역학 (Gere) — Stresses in Beams (Basic Topics): Problem 5.5-6

5.5-6 A simply supported beam is subjected to a linearly varying distributed load \( q(x) = \frac{x}{L}q_0 \) with maximum intensity \( q_0 \) at B. The beam has a length \( L = 4 \text{ m} \) and rectangular cross section with a width of \( 200 \text{ mm} \) and height of \( 300 \text{ mm} \). Determine the maximum permissible value for the maximum intensity, \( q_0 \), if the allowable normal stresses in tension and compression are \( 120 \text{ MPa} \).