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ScottRiqui · January 29, 2013, 01:17 PM

Thanks for the correction, Unclenick - when I was balancing the gravitational force against the centrifugal "force", I switched units from Newtons to kilogram-force midway through the calculations. So my final answer was off by a factor of sqrt (9.81).

Serves me right for not "stink checking" my answer - 240 rpm should have seemed excessive to me.

January 29, 2013, 01:17 PM	#13
ScottRiqui Senior Member Join Date: January 27, 2010 Location: Norfolk, VA Posts: 2,905	Thanks for the correction, Unclenick - when I was balancing the gravitational force against the centrifugal "force", I switched units from Newtons to kilogram-force midway through the calculations. So my final answer was off by a factor of sqrt (9.81). Serves me right for not "stink checking" my answer - 240 rpm should have seemed excessive to me.