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Re: Structural failure of NY's WTC



In the context of this discussion it would interesting if
somebody could capture the frames of the collapsing
building, tabulated the y(t) data and shared the numbers.

The tip of the antenna, for example, was collapsing
vertically. Was it a motion whose acceleration was
9.8 m/s^2? Certainly not. Was the acceleration constant?
The a(t) plot can be very instructive, I think. It would
be a great service to many of us if the y(t) table could
be made available as soon as possible.
Ludwik Kowalski

IN OTHER WORDS, THE KINETIC ENERGY OF
FALLING SECTIONS WAS USED TO PERFORM
THE DESTRUCTIVE WORK OF BENDING AND
CRASHING.