Player breaking the OOB plane.....what's the call? - Page 2

Mark T. DeNucci, Sr. · #16 (**permalink**) Fri Aug 08, 2003, 09:12am

Quote:

Originally posted by Mark Padgett

[/B]

I've worked with dozens of officials who work the PIL. None of them I've ever met is that dumb (except one who told me a player's status is determined by his "center of gravity").

[/B][/QUOTE]

He is even dumber, the correct term is "center of mass" not "center of gravity."

ChuckElias · #17 (**permalink**) Fri Aug 08, 2003, 10:17am

Quote:

Originally posted by Mark T. DeNucci, Sr.
He is even dumber, the correct term is "center of mass" not "center of gravity."

I'm not sure that makes him dumber, Mark. I'm not particularly dumb, but I've never heard the phrase "center of mass" before your post. I think that unless you are trained as an engineer, "center of mass" doesn't mean a hill of beans.

Dan_ref · #18 (**permalink**) Fri Aug 08, 2003, 10:28am

Quote:

Originally posted by Mark T. DeNucci, Sr.

Quote:

Originally posted by Mark Padgett

I've worked with dozens of officials who work the PIL. None of them I've ever met is that dumb (except one who told me a player's status is determined by his "center of gravity").

[/B]

He is even dumber, the correct term is "center of mass" not "center of gravity." [/B][/QUOTE]

Somehow I always thought that in a uniform field center of mass = center of gravity. Apparently these people agree:

http://hyperphysics.phy-astr.gsu.edu/hbase/cm.html

Did I miss something?

Edit: Maybe they differ when doing dynamic analysis?

[Edited by Dan_ref on Aug 8th, 2003 at 10:31 AM]

Dan_ref · #19 (**permalink**) Fri Aug 08, 2003, 10:30am

Quote:

Originally posted by ChuckElias

Quote:

Originally posted by Mark T. DeNucci, Sr.
He is even dumber, the correct term is "center of mass" not "center of gravity."

...I'm not particularly dumb...

Gee, I dunno, I once heard that you are not just run of the mill dumb but "f***ing dumb".

Or was that stupid...anyway, carry on.

ChuckElias · #20 (**permalink**) Fri Aug 08, 2003, 02:32pm

Got me there, pardner

rainmaker · #21 (**permalink**) Fri Aug 08, 2003, 05:14pm

Quote:

Originally posted by Dan_ref
Somehow I always thought that in a uniform field center of mass = center of gravity.

Dan, I suppose Mark might be assuming that the human body (especially the one of the person Padgett refers to) IS NOT a "uniform" field of mass.

Mark Dexter · #22 (**permalink**) Sun Aug 10, 2003, 10:35pm

Quote:

Originally posted by Dan_ref

Somehow I always thought that in a uniform field center of mass = center of gravity. Apparently these people agree:

http://hyperphysics.phy-astr.gsu.edu/hbase/cm.html

Did I miss something?

Edit: Maybe they differ when doing dynamic analysis?

[Edited by Dan_ref on Aug 8th, 2003 at 10:31 AM]

Yup - only problem is, good luck finding a uniform gravitational field.