MEMB243/MEMB2024 Mechanics of Materials Quiz 2 A compound bar ABC 1.5m long is made up of two parts aluminum and steel. Knowing that the cross- sectional area of aluminum bar is twice that of the steel bar. The rod is subjected to an axial tensile load of 200 kN. If the elongation of aluminum and steel parts are equal, determine the length Las and Lac for the two parts of the compound bar. Take E for steel as 200 GPa and E for aluminum is one-third of E for steel. LAB 1.5 m B Aluminum Lac Steel 200 kN