고체역학 (Gere) — Axially Loaded Members: Problem 2.2-15

2.2-15 An aluminum wire having a diameter \(d = 2\text{ mm}\) and length \(L = 3.8\text{ m}\) is subjected to a tensile load \(P\) (see figure). The aluminum has a modulus of elasticity \(E = 75\text{ GPa}\). If the maximum permissible elongation of the wire is \(3\text{ mm}\) and the allowable stress in tension is \(60\text{ MPa}\), what is the allowable load \(P_{\text{max}}\)?