A motor lifting a load by means of a winch. The weight lifted is1500 kg at a velocity of 0.5 m/s. The motor runs at a speed of 1250 rpm. The inertia of the winch drum and motor are 1.8 kg.m2 and 3.6 kg.m2 respectively.  Calculate  (i)  the  total  load  torque  of  the  system  referred  to motor  shaft,  (ii)  the  inertia  referred  to  the  motor  shaft.