고체역학 (Gere) — Axially Loaded Members: Problem 2.4-3

2.4-3 A steel bar with a uniform cross section is fixed at both ends. A load \( P = 10 \text{ kN} \) is applied at point C. The bar has a cross-sectional area of \( 5100 \text{ mm}^2 \). Calculate the reactions at joints A and B and the displacement at joint C. Assume that the modulus of elasticity \( E = 200 \text{ GPa} \).