Date: Sat Oct 31 23:45:19 2009 *** ***Back to Contents *** ------------------------------------------------------------------------ ***

Author: Bernard Cleyet

Subject: Re: centripetal acceleration and friction demonstration

Post:


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Last resort: video.

bc


On 2009, Oct 31, , at 16:37, Dan Bernoulli wrote:

> Does anyone have pens for the old hp plotters? I through all mine
> out last summer having languished in the garage for decades, and
> now I have a use for them (go figure!).We have just made a rotating
> platform to do this exact same demo. Works well but we would like
> to be able to draw the trajectory as the object slides along the
> platform. I have drilled one of the "pucks (delrin 5 cm in dia X 1
> cm tall) to hold a marker. Seems to work okay but it is a little
> tall. I suspect the plotter pen would work like a champ. Lacking
> plotter pens,


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Last resort: =
video.***
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***bc***
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***On = 2009, Oct 31, , at 16:37, Dan Bernoulli wrote:***
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***Does anyone have pens = for the old hp plotters? I through all
mine out last summer having = languished in the garage for decades,
and now I have a use for them (go = figure!).We have just made a
rotating platform to do this exact same = demo. Works well but we
would like to be able to draw the trajectory as = the object slides
along the platform. I have drilled one of the "pucks = (delrin 5 cm
in dia X 1 cm tall) to hold a marker. Seems to work okay = but it is
a little tall. I suspect the plotter pen would work like a = champ.
Lacking plotter = pens,***

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***=

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From tap-l-owner@lists.ncsu.edu Sat Oct 31 23:45:19 2009
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