A wound-field dc motor is driving a load whose torque requirement increases linearly with speed and reaches 5 Nm at a speed of 1,400 rpm. The armature terminal voltage is held to its rated value. At the rated Bf, the no-load speed is 1,500 rpm and the speed while driving the load is 1,400 rpm. If Bf is reduced to 0.8 times its rated value, calculate the new steady state speed.