On Nov 13, 2008, at 5:09 AM, Olin Lathrop wrote: > Oh gimme a break. The formula is so simple it's not laziness but > that you > forgot to pay attention in high school physics. > > And by the way, 1000 RPM at 1 foot is 3343g (this took all of 10 > seconds to > do on my trusty HP 11C calculator). I call unlikely result! Ac = w^2r [m/s^2 = (rad/s)^2 * m] = ((1000/60)*2*pi)^2 * .3 = 3289.86 m/s^2 To convert from m/s^2, divide by 9.8m/s^2, giving 335.7g That's still higher than I expected, but I guess it must be possible. How'd you manage to be off by "approximately" a factor of 10? BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist