posted on Jul, 30 2012 @ 02:00 PM
I would agree that there was not much bending of columns going on, in fact the connections holding them together were sheared meaning the columns did
not need to bend to fail.
The top section of tower 1 at least did acquire angular momentum which did not stop, but as they top section did fragment the angular momentum was
preserved as translational momentum. The top floor of the bottom section will offer little resistance against the far bigger top section crashing down
into it, it does however slow the acceleration of the top section slightly. You have to understand that the force required to arrest the upper tower
would be equal to the required change in momentum of the upper block divided by the time in which this change is made.
interesting that you would mention the columns shearing. if by shearing you literally mean "cut from," then how exactly can this happen so
symmetrically, even with the translational momentum of the broken top portion of tower 1? what exactly would be doing the cutting?
i have to say that i agree with your depiction, as it really does not look very different from mine at all, but let's take this a bit further. i'd
like to look at your claim that the top floor of the bottom section will offer little resistance against a far bigger top section. this is where i see
our primary, if not only, difference. while i agree that the top floor of the bottom section would cause little to no resistance, what about the
remaining 60+ floors under it? i keep coming back to this point because it's pivotal to understanding the building's descent.
one floor causes no resistance, but 60 - 80 floors of steel columns DEFINITELY cause a lot of resistance onto a falling section of around 15-20
floors. from this, much more than just deceleration of the top section would occur. we would have seen eventual arrest of the top section's momentum.
this is how a natural collapse would have looked if it was in fact natural.
i mean.. i don't know, maybe i'm just not understanding this right at all - how do you see 15 falling floors being able to "shear off" over 60
floors of steel trusses and columns? if we're talking straight physics here, how would the 15 falling floors, which as you state break apart on the
way down, regain a symmetrical amount of kinetic energy strong enough to slice steel columns apart after it has met the resistance of about 20 floors
on its way down? i guess a more focused question would be, do you expect the kinetic energy and momentum of 15 falling floors to be able to
symmetrically rip through over 60 standing floors of steel? if so, how is this possible, and where else can i observe such a phenomenon for