고체역학 (Gere) — Axially Loaded Members: Problem 2.6-9

2.6-9 A prismatic bar with a length \(L = 1\text{ m}\) and cross-sectional area \(A = 5200\text{ mm}^2\) is compressed by an axial centroidal load \(P = 45\text{ kN}\). Determine the complete state of stress acting on an inclined section \(pq\) that is cut through the bar at an angle \(\theta = 35^\circ\), and show the stresses on a properly oriented stress element.