Date: Thu Nov 9 09:44:05 2006

Author: Richard Heckathorn

Subject: Re: Video wanted of Football Flight

Post:
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Greetings,

=20

I would think it would not be hard to video a
number of throws. Also would think that one might
have a former or present quarterback in class.

=20

Could one contrast the tight spiral vs a wobbly
one?

=20

Dick

=20

=20

Helping teachers who facilitate, motivating
students who learn.

Dick Heckathorn 14665 Pawnee Trail Middleburg
Hts, OH 44130 440-826-0834

www.cvcaroyals.org/~rheckathorn/

Adjunct Physics Teacher - Baldwin Wallace College

Physics is learning how to communicate with ones
environment so that it will talk back.

=20

-----Original Message-----
From: tap-l-owner@lists.ncsu.edu
[mailto:tap-l-owner@lists.ncsu.edu] On Behalf Of
Gerald Zani
Sent: Thursday, November 09, 2006 9:16 AM
To: tap-l@lists.ncsu.edu
Subject: [tap-l] Video wanted of Football Flight

=20

Tappers,

I am searching for a video of a football tossed
with a good spiral throw. Does anybody now where
I can get this?

this is for a discussion in a Mechanics class on
the stability of rotating objects. For mare
details read Kleppner and Kolenkow pp. 323,
example 7.16. Briefly, I want to show that the
motion of an unstable rotating system will easily
be disrupted. And the rotational motion of a
stable rotating system is more difficult to
disrupt.


Thanks,
-- JZ


Gerald Zani e-mail:
Gerald_Zani@brown.edu
Manager of Demonstrations phone: (401)
863-3964
Department of Physics FAX: (401)
863-2024
Brown University Providence, RI
02912-1843 USA
=20
http://www.physics.brown.edu/physics/demopages/dem
o/
http://www.physics.brown.edu/physics/userpages/sta
ff/Gerald_Zani/index.html
=20
Do a little more of that work which you have
confessed to be good,
Which you feel that society and your most Just
Judge rightly demand of you.
Cultivate the tree which you have found to bear
fruit in your soil.
If you have any experiments you would like to try,
try them.=20
Now's your chance.

Henry David Thoreau, Journal entry, 1850.


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Greetings,



I would think it would not be hard =
to
video a number of throws. Also would think that one might have a former =
or
present quarterback in class.



Could one contrast the tight spiral =
vs a
wobbly one?



Dick







Helping teachers =
who
facilitate, motivating students =
who
learn.

Dick
Heckathorn 14665 Pawnee Trail Middleburg Hts, OH
44130 440-826-0834

www.cvcaroyals.org/~rheckathorn/

Adjunct
Physics Teacher - Baldwin Wallace College

Physics
is learning how to communicate with ones environment so that it will =
talk back.





-----Original =
Message-----
From: =
tap-l-owner@lists.ncsu.edu
[mailto:tap-l-owner@lists.ncsu.edu] On Behalf
Of Gerald Zani
Sent: Thursday, November =
09, 2006
9:16 AM
To: =
tap-l@lists.ncsu.edu
Subject: [tap-l] Video =
wanted of
Football Flight



Tappers,

I am searching for a video of a football tossed with a good spiral =
throw.
Does anybody now where I can get this?

this is for a discussion in a Mechanics class on the stability of =
rotating
objects. For mare details read Kleppner and Kolenkow pp. =
323,
example 7.16. Briefly, I want to show that the motion of an
unstable rotating system will easily be disrupted. And the =
rotational
motion of a stable rotating system is more difficult to disrupt.


Thanks,
-- JZ






Gerald
Zani =
; &nb=
sp; e-mail:
Gerald_Zani@brown.edu
Manager of
Demonstrations ph=
one:
(401) 863-3964
Department of
Physics &n=
bsp; FAX:
(401) 863-2024
Brown
University =
Providence=
,
RI 02912-1843 USA

http://www.physics.brown.edu/physics/demopages/demo/=

http://www.physics.brown.edu/physics/userpages/staff/Ger=
ald_Zani/index.html

Do a little more of that work which you have confessed to be
good,
Which you feel that society and your most Just Judge rightly demand
of you.
Cultivate the tree which you have found to bear fruit in your
soil.
If you have any experiments you would like to try, try them.=20

Now's your chance.

Henry David Thoreau, Journal entry, 1850.



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