Q 17.6 A cylindrical copper wire and a cylindrical steel wire each of length 1.5 and diameter 2.0 mm are joined one end to form a composite wire of 3.0 m long. The wire is loaded until its length becomes 3.003 m. Calculate the strain in copper and steel wire and the force applied to the wire. (Young’s Modules of Copper is 1.2 * 10(11) Pa and for steel is 2.0 * 10(11) Pa).