Re: Snipper Roberts wouldn't know his Arse from his Elbow.
- From: Tom Roberts <tjroberts137@xxxxxxxxxxxxx>
- Date: Thu, 21 Dec 2006 04:02:11 GMT
Henri Wilson wrote:
PLAINLY, IF THE HOT DOG STAND IS SEEN TO MOVE AROUND IN A CIRCLE FOR NO
APPARENT REASON, THE ONLY IMAGINARY FORCE REQUIRED IS A CENTRIPETAL ONE.
Amazingly, you got it right, without even realizing it: sum up the "centrifugal force" and the "Coriolis force" that the rotating observer ascribes to the hot dog stand, and the result is _precisely_ the center-seeking "force" -m*v^2/r needed in the rotating frame to make it move in a circle. You even got it right that this "force" is "imaginary" (though the usual word is "fictitious").
Tom Roberts
.
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