A 550-kW, 2400-V, six-pole, 60-Hz three-phase induction motor has the following equivalent circuit parameters in ohms-per-phase-Y referred to the stator: R1 = 0.108 R2 = 0.296 X1 = 1.18 X2 = 1.32 Xm = 48.4. The motor will be driven by a constant-V/Hz drive whose voltage is 2400 V at a frequency of 60 Hz. The motor is used to drive a load whose power is 525 kW at a speed of 1138 r/min and which varies as the cube of speed. Using MATLAB, plot the motor speed as a function of frequency as the drive frequency is varied between 20 and 60 Hz.