(14.1) The Young's modulus of steel is Ype = 200 GPa. A steel wire with circular cross- section and diameter d = 2.3 mm is stretched by 0.015% when a mass is hung from it. Determine the mass. Take g=10m/s2. (14.2) The Young's modulus of molybdenum is YM. = 329 GPa. A molybdenum bar with cross-sectional area A = 0.47 cm² = 4.7 x 10-5 m² and original length 4 m is subjected to a compressive force of 10' N. Determine the length of the bar when it is under compression. (14.3) Two rods possess the same length, L, and cross-sectional area, A. The Young's moduli of the rods are Y and Y respectively. (a) Determine the effective Young's modulus of the two rods when they are combined in parallel (b) Determine the effective Young's modulus of the two rods when they are combined in series. Problem Set #14 Spring 2021