Rim Type Flywheel

The energy is stored in Flywheel in form of
With usual notations for different parameters involved, the maximum fluctuations of energy for a flywheel is given by
Flywheel are generally made from
The difference the maximum and minimum speeds during a cycle is called
A flywheel connected to a punching machine has to supply energy of 160Nm while running at a mean angular speed of 12rad/s. If the total fluctuation of speed is not exceeded to ±1.75%, the mass moment of inertia of the flywheel in kgm2 is