A 2.0 m long steel wire (Young’s modulus Y_s = 2 × 10¹¹ Pa) with a 1.0 mm radius is suspended from a ceiling. A 1.0 m long brass wire (Y_b = 1 × 10¹¹ Pa) of the same radius is attached to its free end. A 10 kg mass is then hung from the free end of the brass wire. What is the total elongation of the combined wire? (Use g = 10 m/s² and π ≈ 3.14)
