One end of a metal wire is fixed to a ceiling and a load of 2 kg hangs from the other end. A similar wire in attached to the bottom of the load and another load of 1 kg hangs from this lower wire. Find the longitudinal strain in both the wires. Area of cross section of each wire is 0.005cm2 and Young modulus of the metal is 2.0 × 1011 N m−2. Take g=10ms−2.