1.
Steel and brass wires length 5050 cm, area 0.0050.005 cm^{2},, 15cmapart.Equalextension cm apart. Equal extension 0.1cm. cm. Y_s = 2\\times10^{12},, Y_b = 1\\times10^{12}dynes/cm2 dynes/cm^{2}. Distance from steel wire for load: