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RE: Generation Gap - 4/19/2016 12:43:32 AM

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quote:

ORIGINAL: Phydeaux

quote:

ORIGINAL: Marini

quote:

ORIGINAL: Phydeaux

quote:

ORIGINAL: Marini
You had newspapers?
And shoes?
Wow!!!!

Vicious, vindictive, pointless. Pretty much sums up so much of the left.

Me? Someone is a mean mood.

Oh yeah? And taking a cheap shot at someone that was unemployed for 3 years, and went back to school to make a living - thats cool and laudable, right?
I'll give mnotter credit - when he takes a cheap shot at someone he at least doesn't try to pass it off as humor.

I don't think you followed Marini's comments. They weren't in response to anything I said. They were in response to thishereboi's post here.

It was along the same vein as other posts have been about not having anything, etc.

It wasn't a cheap shot at anyone, and was nothing more than a joke. Seriously.

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(in reply to Phydeaux)

RE: Generation Gap - 4/19/2016 1:21:07 AM

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ORIGINAL: Phydeaux

Or maybe you would read the links and see that the proper term is actually center of gravity; that the damn near universal convention is to measure only in terms of height.

How does that work for three dimensional objects....like a sphear or ....a human body?

(in reply to Phydeaux)

RE: Generation Gap - 4/19/2016 1:23:00 AM

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ORIGINAL: Phydeaux

Yeah?well at least that attack is straightforward.

Issues, eh. I'm not the one passing off cheap attacks as jokes.

All your post are cheap shots full of ignorance,half truths and whole lies.

(in reply to Phydeaux)

RE: Generation Gap - 4/19/2016 1:56:38 AM

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quote:

ORIGINAL: Marini

My comment was a joke, in the theme of those complaining about how hard it was years ago.

If you read up, I told the young man I felt sorry for his generation.
Clearly a joke.
You have issues, carry on.

Issues? He has a whole subscription.

Dude, everyone on the forum but You knew it was a joke. Don't you ever wonder what else about everyone gets that you don't? Nah, I guess not. Ever.

As someone who has had Sisyphean nightmares since childhood, anyone mind if we just let that sort of fade from the thread?

Center of Gravity: The guy at the party who never gets the humor?? Nope, its a useful concept for calculating dynamics in the real world. Not in 2 or 1 dimension I've noticed. All over race car and aviation work, precise and 3D; X,Y and Z axis. Same in Martial arts, center of Ki, a point in 3 dimensions behind and below the Navel, as well as center of and source for a concept of internal energy, of somewhat mystical bent.

< Message edited by epiphiny43 -- 4/19/2016 2:07:11 AM >

(in reply to Marini)

RE: Generation Gap - 4/19/2016 2:15:09 AM

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quote:

ORIGINAL: Phydeaux

quote:

ORIGINAL: Marini

My comment was a joke, in the theme of those complaining about how hard it was years ago.

If you read up, I told the young man I felt sorry for his generation.
Clearly a joke.
You have issues, carry on.

Yeah?well at least that attack is straightforward.

Issues, eh. I'm not the one passing off cheap attacks as jokes.

Do you make fun of minorities too? Polish jokes. Jewish jokes. Those funny too? Or is it only those on the right you make fun of?

Why don't you explain the humor what so funny in making fun of someone.

Or maybe you could point out the post where she did that. I am pretty sure I have read all of her posts and I must have missed that one.

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(in reply to Phydeaux)

RE: Generation Gap - 4/19/2016 2:53:11 AM

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quote:

ORIGINAL: Marini

You had newspapers?
And shoes?
Wow!!!!

we wuz special like that

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(in reply to Marini)

RE: Generation Gap - 4/19/2016 3:05:59 AM

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I am 27 and I love the seventies disco music. !!!

age is just a number. xx

(in reply to Zonie63)

RE: Generation Gap - 4/19/2016 3:24:02 AM

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quote:

ORIGINAL: thishereboi

quote:

ORIGINAL: Marini

You had newspapers?
And shoes?
Wow!!!!

we wuz special like that

That's sounds like the deadpool scene haha, when they were comparing who had a more fucked up childhood.

(in reply to thishereboi)

RE: Generation Gap - 4/19/2016 7:52:07 AM

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quote:

ORIGINAL: thompsonx

ORIGINAL: Phydeaux

Or maybe you would read the links and see that the proper term is actually center of gravity; that the damn near universal convention is to measure only in terms of height.

How does that work for three dimensional objects....like a sphear or ....a human body?

News flash. You only need one number to specify the center of gravity of a homogenious sphere or cube. The fact that you would post that illustrates you have no grasp of the concept.

Likewise, people have little interest in determining the ventral or dorsal center of gravity. Only the height is of interest.

(in reply to thompsonx)

RE: Generation Gap - 4/19/2016 9:09:23 AM

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ORIGINAL: Phydeaux
ORIGINAL: thompsonx

Or maybe you would read the links and see that the proper term is actually center of gravity; that the damn near universal convention is to measure only in terms of height.

How does that work for three dimensional objects....like a sphear or ....a human body?

News flash. You only need one number to specify the center of gravity of a homogenious sphere or cube. The fact that you would post that illustrates you have no grasp of the concept.

Roflmfao

Likewise, people have little interest in determining the ventral or dorsal center of gravity. Only the height is of interest.

You and your sock drawer seem to be the only ones.

(in reply to Phydeaux)

RE: Generation Gap - 4/19/2016 9:53:11 AM

Posts: 60698
Joined: 11/3/2004
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quote:

ORIGINAL: Phydeaux

quote:

ORIGINAL: thompsonx

ORIGINAL: Phydeaux

Or maybe you would read the links and see that the proper term is actually center of gravity; that the damn near universal convention is to measure only in terms of height.

How does that work for three dimensional objects....like a sphear or ....a human body?

News flash. You only need one number to specify the center of gravity of a homogenious sphere or cube. The fact that you would post that illustrates you have no grasp of the concept.

Likewise, people have little interest in determining the ventral or dorsal center of gravity. Only the height is of interest.

Don't dig deeper. W or say 127 does not specify center of gravity.

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(in reply to Phydeaux)

RE: Generation Gap - 4/19/2016 10:16:28 AM

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quote:

ORIGINAL: Greta75

quote:

ORIGINAL: thishereboi

quote:

ORIGINAL: Marini

You had newspapers?
And shoes?
Wow!!!!

we wuz special like that

That's sounds like the deadpool scene haha, when they were comparing who had a more fucked up childhood.

have you ever seen the monty python sketch? the four yorkshiremen???
https://www.youtube.com/watch?v=VKHFZBUTA4k
Classic, it seems they put it into Deadpool:)
I may have to watch Deadpool now.

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(in reply to Greta75)

RE: Generation Gap - 4/19/2016 10:18:11 AM

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quote:

ORIGINAL: epiphiny43

quote:

ORIGINAL: Marini

My comment was a joke, in the theme of those complaining about how hard it was years ago.

If you read up, I told the young man I felt sorry for his generation.
Clearly a joke.
You have issues, carry on.

Issues? He has a whole subscription.

Dude, everyone on the forum but You knew it was a joke. Don't you ever wonder what else about everyone gets that you don't? Nah, I guess not. Ever.

Lifetime subscription.

Marini you said nothing wrong, we all otherwise seem to have taken it as it was meant.

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<) )╯SUCH
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\(•_•)
( (> A NASTY
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(•_•)
<) )> WOMAN
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Dont Hate Love

(in reply to epiphiny43)

RE: Generation Gap - 4/19/2016 12:18:02 PM

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Joined: 8/27/2008
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quote:

ORIGINAL: Phydeaux

quote:

ORIGINAL: Hillwilliam

quote:

ORIGINAL: bounty44

quote:

ORIGINAL: Hillwilliam

quote:

ORIGINAL: Phydeaux

quote:

ORIGINAL: bounty44

in principal, im in general agreement.

I know on the whole though, students, at least many students of today, would complain vociferously about something like that and unfortunately, the administration would back them up.

once in a lab I gave the students all the apparatus they needed in order to find the answer to a particular question---and wanted them to figure it out based on the tools at hand. eventually they did, but in the meantime there was a lot of angst directed at me with "why don't you teach us??" being first and foremost.

I bet you would have liked it---figuring out center of gravity on a human body with two doctor office scales and a long plank.

Great job.

Piece of cake to solve tho.

Lie the plank so either end rests on the scales. Calibrate to zero.
Lie the person on the plank.
The ratio of weights projected along the plank is the center of gravity of the person.

Close, but no cigar.
The center of gravity or physical center of any 3 dimensional object (including humans) is a point in 3 dimensions which would commonly be expressed by its x, y and z coordinates.
The above experiment only determines the z coordinate (assuming that z is the vertical axis of the human while standing) of the location of the center of gravity. This gives the location of the plane where the desired answer (a point) is located. Due to the fact that there are an infinite number of points in a plane, the answer is nowhere close to the center of gravity.

Had you been telling them to locate a balance point, you would have been correct.
Unfortunately, you failed 10th grade geometry while attempting to teach physics.

instead of being a pompous and pedantic ass, you could rather have given some grace and understand that we're colloquially referring to the height of the center of gravity, knowing that the actual point would exist internally.

that takes care of your x, y and z axis points.

and no, there is only one point given an entire human body.

"center of gravity:

"imaginary point through which the resultant force of gravity acts on an object; in the point at which the entire weight of the body may be assumed to be concentrated; the point about which the torques created by the weights of each of the body parts balance; the point of balance of the body."

from biomechanics of sport and exercise by peter McGinnis.

"center of gravity:

"a body's center of gravity, or center of mass, is the point around which the body's weight is equally balanced..."

from basic biomechanics by susan hall.

and yeah, I know, as did my students, and I trust phydeaux knows, that the point changes according to posture.

Maybe I was referring to the person who posted this (or the teacher who wrote what he quoted and claimed as his own) was complaining about young folk who have no critical thinking skills. The irony is that the author likewise has no critical thinking skills when they read this out of the teacher's manual or they would have realized the fallacy.

If you had known, OR your students, OR Phydeaux, you would have used the proper terms.

Or maybe you would read the links and see that the proper term is actually center of gravity; that the damn near universal convention is to measure only in terms of height.

Probably not tho.

Going by your definition, the equator (or prime meridian) is the center of the earth.
The center of gravity of a 3 dimensional object is an individual POINT, not plane that is typically within said object.
Face it. You fucked up by the numbers using what I feel just might be a made up story.
Why do I think so? A typical HS whether it has a few hundred students or several thousand will have exactly ONE medical scale.
Said scale will be under the care of the football and/or wrestling coaches.
How do I know? I taught science including AP physics and coached wrestling for several years.

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(in reply to Phydeaux)

RE: Generation Gap - 4/19/2016 12:51:00 PM

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ORIGINAL: BondageersT

I am 27 and I love the seventies disco music. !!!

age is just a number. xx

For some of us it is a pretty big number. lxxi

(in reply to BondageersT)

RE: Generation Gap - 4/19/2016 1:26:14 PM

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quote:

ORIGINAL: Hillwilliam
Going by your definition, the equator (or prime meridian) is the center of the earth.
The center of gravity of a 3 dimensional object is an individual POINT, not plane that is typically within said object.
Face it. You fucked up by the numbers using what I feel just might be a made up story.
Why do I think so? A typical HS whether it has a few hundred students or several thousand will have exactly ONE medical scale.
Said scale will be under the care of the football and/or wrestling coaches.
How do I know? I taught science including AP physics and coached wrestling for several years.

this is *^&$ maddening.

heres the first link in question:

http://www.csr.utexas.edu/grace/education/activities/pdf/Finding_Your_Ctr_of_Mass.pdf

read it please.

here's another one I just found:

http://hypertextbook.com/facts/2006/centerofmass.shtml

read it please.

note in that in both instances they refer to the center of mass/center of gravity in terms of its height relative to the human body.

its essentially the way we did our lab.

in my aforementioned McGinnis text, here are some quotes:

"a woman's center of gravity is slightly LOWER..."

"a woman's center of gravity is approximately 55% of her HEIGHT..."

"...a man's center of gravity is approximately 57% of his HEIGHT..."

"the stability of an object is affected by the HEIGHT of the center of gravity..."

from hall, in her section "locating the human body center of gravity":

"some relatively simple procedures exist for determining the location of the COG of the human body. in the 17th century the Italian mathematician Borelli used a simple balancing procedure of COG location that involved positioning a person on a wooden board. [my clues to the students about teeter-totters] a more sophisticated version of this procedure enables calculation of the location of a plane passing through the COG of a person positioned on a reaction board." [we didn't have a reaction board, so we used two scales instead]

its the same process as recorded in the two links above.

the solution can be either derived mathematically, or physically by moving the subject on the board resting on both of the scales, relative to its midpoint, until the weight is balanced on both ends.

there's a diagram of it in the text, and corresponding equations jibing with what phydeaux wrote.

halls writing, as McGinnis, are full of references to the COG in terms of height.

now, in terms of your complete nonsense about the scales--two things.

one is, the school setting in question was a college, had you read the posts that came before or afterwards, you should have noticed that. we had one scales from the biology lab, and another from the athletic training room.

two is---if youre omniscient, then by all means you can say there only exists one scale in any particular high school, but youre not. otherwise, my high school for instance had one in the nurse's office and one in the boy's locker room.

and in terms of the "made up story"---maybe you missed this, im the one who posted the original story. college course in biomechanics, we used mcginnis' text. I picked it in part because I already had the text but also because he was presently teaching at my old undergraduate school. but yeah, sure, I made it up...

I don't know what it is you think you are trying to prove, but I wish you, as well as the clever-in-his-own-eyes comrade below, would stop.

< Message edited by bounty44 -- 4/19/2016 1:56:05 PM >

(in reply to Hillwilliam)

RE: Generation Gap - 4/19/2016 1:33:53 PM

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all agreed, and still, how are you going to measure? No measuring device was included.

further, if you wear clothing, there is a difference, shoes are heavier than a shirt. it will shift.

If you are just scientific wild ass guessing thats ok, but it isn't anything other than a loose approximation of the center of gravity. And since we are using the pyramids under to lift the board, we also have that distance, and we dont have the center of the scale, so thats another introduced error. And we dont know if the scale is accurate at the center, or the edges or where its accuracy lies. So we got 4 or 5 subtle errors in our measurements.

And somebody clearly called Newton wrong, and believe me, his 'approximation' is closer than yours.

Therefore, wrong. In your own words.

< Message edited by mnottertail -- 4/19/2016 1:36:06 PM >

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RE: Generation Gap - 4/19/2016 2:28:05 PM

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Thanks zonie {you are a real gentleman}.

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NOT a Republican/Moderate and free agent

(in reply to Zonie63)

RE: Generation Gap - 4/19/2016 2:30:06 PM

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Joined: 2/14/2010
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quote:

ORIGINAL: mnottertail

quote:

ORIGINAL: Phydeaux

quote:

ORIGINAL: Marini

You had newspapers?
And shoes?
Wow!!!!

Vicious, vindictive, pointless. Pretty much sums up so much of the left.

cretinous.
impugning
hysterical pants shitting
hallucinatory
factless
Pretty much sums up the rightwing nutsuckers.

Thanks Ron, I actually agree with you when it comes to SOME people on here.

_____________________________

As always, To EACH their Own.
"And as we let our own light shine, we unconsciously give other people permission to do the same. "
Nelson Mandela
Life-long Democrat, not happy at all with Democratic Party.
NOT a Republican/Moderate and free agent

(in reply to mnottertail)

RE: Generation Gap - 4/19/2016 2:31:23 PM

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Joined: 2/14/2010
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Thanks DS, I think everyone else got it.
The theme has even going on a few days now.

_____________________________

As always, To EACH their Own.
"And as we let our own light shine, we unconsciously give other people permission to do the same. "
Nelson Mandela
Life-long Democrat, not happy at all with Democratic Party.
NOT a Republican/Moderate and free agent

(in reply to DesideriScuri)

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