One end of a metal wire is fixed to a ceiling and a load of 2kg hangs from the other end. A similar wire is attached to the bottom of the load and another load of 1kg hangs from this lower wire. Then the ratio of longitudinal strain of upper wire to that of the lower wire will be___ [Area of cross section of wire =0.005cm2, Y=2×1011Nm−2 and g=10ms−2]