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*Subject*: RE: [amsat-bb] Propellant fluid dynamics at zero-g*From*: Tony Langdon <tlangdon@xxxxxxxxxxxxxxxxxx>*Date*: Thu, 11 Jan 2001 15:52:30 +1100

> I don't believe in centripetal or centrifugal force. Any > good Physics text will > give the arguments more clearly than I intend to here. To > prove it one way or > the other try this experiment: While whirling a ball (or > other small mass) on a > string around you. Let go of the string. Which way does the > ball go? Don't do > this in a china shop! Centripetal force is you holding the string. :-) That's the only real force in this scenario. And as you have proven, without centripetal force, the ball flies off in a straight line at the tangential velocity (of the moment the string was let go). ---- Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA. To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

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