Comment by tbabb

Holy crap. 125,000RPM for a 5mm disc means the edge is spinning at nearly 9,000mph.

On top of that, the g-force would be

    a = v^2 / r 
    v = 2 * pi * 5mm * 125000/60 s^-1`
    r = 5mm 

...giving 87,000 gees?!

I start to wonder if general relativity effects (frame-dragging?) start to become noticeable at that acceleration.