• Quick note - the problem with Youtube videos not embedding on the forum appears to have been fixed, thanks to ZiprHead. If you do still see problems let me know.

Angular momentum of south tower

pdoherty76 said:
i heard they couldnt get the computer models to collapse so they fudged the parameters until it did

is this BS?
Click to expand...
most likely-I would assign a probability of >.99999999999999 that it is BS. They modeled to the point of failure, and stopped.
I do that for a living. Structural models get really balky when buckling occurs (and that is the failure point!)--and few, if any, actually model fracture--some auto makers may have FE programs that do, but the models are necessarily small.
That is why they stopped at the global collapse initiation. At that point, FE and other modeling problems turn into simple physics problems -you use Energy and momentum equations, 'cuz you ain't gonna stop the freight train at that point.
 
So you studied fluids only and somehow you missed the intro physics classes?

You are so full of shiite.

Really, a highschool physics class would explain the fall and why there is no angular momentum.

All of the momentum was downward. There was slight outward vector due to torque around a fulcrum that almost immediately broke. As soon as the fulcrum broke, all force vectors were straight downward with gravity.

There is no way you have an advanced physics degree and can't grasp the most basic of physics concepts.
 
Popeholden said:
indeed, you can see the corner closest to the camera cause a wave in the dust even after it is obscured, if you look closely




Seriously, mad props. You are the first conspiracy theorist i've ever seen that saw the overwhelming evidence against you and changed your mind.

i saw loose change and believed it for about a week

then I read gravy's loose change guide and wanted to strangle avery &co for making a fool out of me.
Click to expand...

bear in mind i didnt believe much of the conspiracy, i just had an intuitive problem with the towers collapse and distrusted the PNAC boys

i will give him his due, gravy is an excellent debunker and he only pissed me off cos i didnt like the way him and abby scott mocked people

my critical thinking skills are not good enough and i hope to improve them here
 
Shrinker said:
Surely nobody ever is going to build a skyscraper that could halt a collapse once it had begun? Arresting the progress of 1/3 of a WTC tower travelling at 18mph (after falling 1 storey - somebody check my maths!) is surely next to impossible. No architect would design for it when it would be far, far cheaper to prevent the collapse in the first place.
Click to expand...
Gravy posted some info, yesterday I believe, about how architects are using the collapses of the towers to help ensure against progressive collapse.

On the other hand, having a 20 or 34 section of the same building come crashing down onto the lower part is probably not reasonable to protect against.
 
As long as movies and/or pictures are not edited I don't care whether they are hosted at .gov or at .ee

Here is the upper part of the "block"

1611-0333.jpg


in the movie you see it disintegrating, destroying, collapsing, a little bit bouncing and fall away from the building
 
pdoherty76 said:
gravy i bet u 1000 pounds my degree was real after u claimed it was in numerology
Click to expand...
Just PM me with your name, date of graduation, and the university or college. I'll check it out and let everyone know if you're correct, without revealing your personal information.

Since you said you'd never been exposed to being asked to prove claims before, and since you write and argue like a 13-year-old, I'm quite curious about what sort of education you've had. Sorry, I don't have a thousand quid to bet, nor do I have any reason to believe that you would honor such a debt.

i said i had destroyed people to wind up the clowns in the slc blogs and remember, i really thought id been banned from here

in certain arguments i have destroyed ppl, check the thread on a national release of loose change
Click to expand...
Please point out one example, as I asked you to do. If you cannot, the gentlemanly thing to do is to retract the claim. Remember, you've still failed to apologize for claiming that I go to Ground Zero to harass people. You're not behaving like an adult, pd.
 
einsteen said:
As long as movies and/or pictures are not edited I don't care whether they are hosted at .gov or at .ee

Here is the upper part of the "block"

http://www.terrorize.dk/911/wtc2dem1/1611-0333.jpg

in the movie you see it disintegrating, destroying, collapsing, a little bit bouncing and fall away from the building
Click to expand...
As I said, the upper portion is completely obscured by smoke and debris at this point.

1) How do you know that what you're looking at is the upper portion of the building disintegrating and not the lower?

2) Why should the upper portion of the building not be disintegrating after it's fallen 10 stories? How does this support your non-gravity-driven collapse scenario in any way?
 
Shrinker, After falling one storey in vacuum the speed is only 5.3 mph if there is no vacuum the speed is about 3.7 mph
 
Gravy said:
1) How do you know that what you're looking at is the upper portion of the building disintegrating and not the lower?

2) Why should the upper portion of the building not be disintegrating after it's fallen 10 stories? How does this support your non-gravity-driven collapse scenario in any way?
Click to expand...

1) A matter of following the upper part of the block, extrapolation.

2) that will also disintegrate, I guess about 2-3 stories
 
pdoherty76 said:
point?
Click to expand...
It's called sarcasm. You come to a skeptic's site with the declared intention of "destroying" us, then you immediately complain about being asked to provide evidence for your claims, state that you don't get what this critical thinking stuff is about, repeatedly threaten to leave as if anyone here wouldn't view that as a blessing, claim that you've been banned from this site and that you have "destroyed" us, and brag about all the critical thinkers you've put on "ignore."

By far the worst performance I've seen on the internet, period. You're not embarrassed by your behavior?
 
einsteen said:
1) A matter of following the upper part of the block, extrapolation.

2) that will also disintegrate, I guess about 2-3 stories
Click to expand...
Got it.
1) You guessed.
2) You guessed.

Thanks for clearing that up.
 
So einsteen, you want to show your work on those speeds?

Sorry I don't know Latex, so I'll try it with ASCII. To find the time it takes to fall one story, let's say 12 feet, use this equation (sorry for the English units):

s = 1/2 a t2
12 = 1/2 (32) t2
t = 0.87 s

So the fall would take 0.87 seconds. How fast would it be going? v = a t

v = (32) (0.87) = 27.7 ft/s, or 18.9 mph.

For a building section that weighs thousands of tons, the air resistance will be negligible. Where on earth did you come up with the precise figure of 3.7 mph?
 
einsteen said:
Shrinker, After falling one storey in vacuum the speed is only 5.3 mph if there is no vacuum the speed is about 3.7 mph
Click to expand...

Thanks einsteen. That's about 2 metres per second right? Hmm, where did I go wrong? :confused: How high are your stories over there einsteen?
 
pdoherty76 said:
hutch which webpage did u just copy and paste that from?
Click to expand...

I do not know if I am on your growing ignore list or not, but I cannot give you a webpage since until I put the words on the page here they did not exist except in my mind.

In other words, bucko, I'm smart enough to read, remember, analyze, synthsize, and coherently explain what I have read and been taught.

I have also been known to read a book or two in the last 40+ years.

*Sigh* I guess what the comedian Robin Williams says is true; The Irish truly did invent Civilization--and then drank too much Guinness and forgot where they put it!

Hutch(half shanty-town Irish background)
 
curtc said:
For a building section that weighs thousands of tons, the air resistance will be negligible. Where on earth did you come up with the precise figure of 3.7 mph?
Click to expand...

The moon?

EDIT: sorry, that would be in a vacuum then :/
 
Last edited:
You must log in or register to reply here.

Back
Top Bottom