고체역학 (Gere) — Axially Loaded Members: Problem 2.2-4

2.2-4 A steel cable with a nominal diameter of 25 mm (see Table 2-1) is used in a construction yard to lift a bridge section weighing 38 kN, as shown in the figure. The cable has an effective modulus of elasticity \(E = 140\) GPa. (a) If the cable is 14 m long, how much will it stretch when the load is picked up? (b) If the cable is rated for a maximum load of 406 kN, what is the factor of safety with respect to failure of the cable?