We where given a problem in class yesterday (sort of a keep you thinking while out of class, not worth any marks, but just a fun challenge).
The teacher asked us to calculate the theoretical energy (in watts) of a given flywheel,
these are the specs,
I = Moment of enertial
W = Rotational velocity (RPM) = 6000 (RPM)
I = k*M*(R*R) = 5
k=Inertial constant = 0.8
M= Mass = 25KG
R= Radious= 0.5m
the formula is quite simple
Kenetic Energy = 1/2 * I * (W*W)
so once you plug in the numbers you get
Kenetic Energy = 90 000 000
I'd love to convert this to watts but I have no clue what the unit for that 90 million is.
please help me.
Thanks Tony