Posted: Jun 13, 2017 2:14 am
Thommo wrote:psikeyhackr wrote:WTC Specs; Official v Alternative Hypothesis
Daniel DeHaan
https://commongroundzero.quora.com/WTC- ... Hypothesis
From the link:-Energy at impact:
OH - 29 stories at 4500 tons each, 12.5 m/s yields 885.9MJ
AH - 14 stories at 1400 tons each, 12.5 m/s yields 142.2MJ
Formula for kinetic energy k.e. = 0.5mv2
OH - k.e. = 0.5 x (29x4,082,331) x 12.52 = 0.5 x 118,387,609 x 156.25 = 9,249MJ
AH - k.e. = 0.5 x (14x1,270,059) x 12.52 = 0.5 x 17,780,821 x 156.25 = 1,389MJ
WOW, those are such impressive numbers!
So where has the energy required to destroy the lower portions been computed in FIFTEEN YEARS.
Tacoma Bridge (with explaination)
https://www.youtube.com/watch?v=rB008RAluyg
In 1940 it took 4 months to make a model of the bridge to duplicate the oscillations in a wind tunnel. They did not have electronic computers. So how is it the neither physical nor virtual models of the north tower collapse have been done in FIFTEEN YEARS. But then we would need accurate data on mass distribution in steel and concrete to create such models. Steel and concrete would not behave the same on impact.
psik