Two wire each have length 1.8 m and diameter 1.2 mm.One wire has Young modulus 1.1*10^2 Pa and the other has 2.2*10^11 Pa.One end of each wire is attached to same fixed point and the other end of each is attached to same load of 75 N so that each has same extension.Calculate the extension of the wires.How do I do solve this? 
