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Internet Message Format  |  1992-11-24  |  1.7 KB
  1. Xref: sparky comp.robotics:2405 sci.electronics:19416
  2. Newsgroups: comp.robotics,sci.electronics
  3. Path: sparky!uunet!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!ames!agate!netsys!ukma!netnews.louisville.edu!ulkyvx.louisville.edu!jhwhit01
  4. From: jhwhit01@ulkyvx.louisville.edu
  5. Subject: Re: Measuring the acceleration of an arrow.
  6. Sender: news@netnews.louisville.edu (Netnews)
  7. Message-ID: <1992Nov23.201213.1@ulkyvx.louisville.edu>
  8. Date: Tue, 24 Nov 1992 00:12:13 GMT
  9. Lines: 33
  10. References: <1992Nov22.203815.9006@hemlock.cray.com> <LAINS.92Nov23091801@world.std.com>
  11. Nntp-Posting-Host: ulkyvx02.louisville.edu
  12. Organization: University of Louisville
  13.  
  14. In article <LAINS.92Nov23091801@world.std.com>, lains@world.std.com (Layne L Ainsworth) writes:
  15. > In article <1992Nov23.040131.1@ulkyvx.louisville.edu> jhwhit01@ulkyvx.louisville.edu writes:
  16. > 
  17. > [stuff explaining this diagram deleted:]
  18. > 
  19. >        |               |
  20. >        |               |
  21. >        |\_____________/|
  22. >        |   spool       |
  23. >        ------------------------ spindle
  24. >        | _____________ |
  25. >        |/             \|
  26. >     O---->O            |
  27. >      source|detector       |
  28. > 
  29. > 
  30. >    Of course, rewinding the thread for a second attempt would be a pain.
  31. > 
  32. >    Jeff White     jhwhit01@ulkyvx.louisville.edu
  33. > 
  34. > The spool method would affect the acceleration of the arrow a little, I would think.
  35. > 
  36. > Just a thought.
  37.   
  38. Quite right about the spool method affecting the acceleration of the
  39. arrow.  That's part of the reason I suggested a light (low mass, low inertia)
  40. spool of thread be used.  The error in the results would be minimal, I would
  41. suppose.
  42.  
  43. I expect the spool method would be just as accurate as the original method
  44. outlined, maybe more accurate.
  45.  
  46. Jeff White       jhwhit01@ulkyvx.louisville.edu
  47.