1. A uniform rod of length 200 cm and mass 500 g is balanced on a wedgeplaced at 40 cm mark. A mass of 2 kg is suspended from the rod at 20cm and another unknown mass 'm' is suspended from the rod at 160 cmmark as shown in the figure. Find the value of 'm' such that the rod is inequilibrium. (g = 10 m/s2)