A small fly wheel fitted to a motor with a moment of inertia of 80 kg m² slows down from 9000 rpm to 5500 rpm in 7.5 seconds.
For the fly wheel, calculate:
• The rate of deceleration which you can assume to be constant
• The braking torque.
Angular acceleration:
= change in speed/ change in time
= [(5500 - 9000)*(2pi/60) rad/s] / 7.5 s
= -48.869 rad/s^2
T = angular acceleration*moment of inertia
= ______ N*m