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- Path: sparky!uunet!newsflash.concordia.ca!mizar.cc.umanitoba.ca!access.usask.ca!skorpio!choy
- From: choy@skorpio.usask.ca (I am a terminator.)
- Newsgroups: sci.math
- Subject: Orbital motion question
- Date: 13 Dec 1992 23:02:52 GMT
- Organization: University of Saskatchewan, Saskatoon, Canada
- Lines: 20
- Sender: choy@skorpio (I am a terminator.)
- Distribution: world
- Message-ID: <1ggfesINN29q@access.usask.ca>
- NNTP-Posting-Host: skorpio.usask.ca
-
-
- Let the vector r be the position of a mass m orbiting in a plane around
- another mass M (which doesn't move) at the origin. The mass m is
- accelerated such that
-
- 2
- d r KMm
- m --- = - ---- r
- 2 2
- dt |r|
- r
- d---
- |r|
- What is the scalar product of r/|r| and ------ ?
- dt
-
- If m moved in an elliptical path, can the scalar product be zero?
-
- Henry Choy
- choy@cs.usask.ca
-