일반물리학 1 — Equilibrium and Elasticity: Problem 43

43 In Fig. 12-45, a 103 kg uniform log hangs by two steel wires, A and B, both of radius 0.600 mm. Initially, wire A was 2.50 m long and 2.00 mm shorter than wire B. The log is now horizontal. What are the magnitudes of the forces on it from (a) wire A and (b) wire B? (c) What is the ratio \(d_A/d_B\)?