Homework SourseAn energy storage system based on a flywheel a rotating disk
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 3.0 MJ when the flywheel is rotating at 13000 revolutions per minute.
What is the moment of inertia of the flywheel?
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 3.0 MJ when the flywheel is rotating at 13000 revolutions per minute.
What is the moment of inertia of the flywheel?
What is the moment of inertia of the flywheel?
Solution
the angular speed is, = 13000 rpm (2*pi/60) =1.361e+3 rad /s
that maximum store energy is K.E = 1/2 I ^2
therefore, the moment of inertia is,
3.0*10^6 J = (1/2) * I * ( 1.361e+3 rad /s )^2
I = 3.24 kg.m^2
