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Reply to "9/11 - The Anniversary, The Legacy"

quote:
Though I don't go in on the 9-11 conspiracy theory


Do you go in for 200 ton airliners leveling 500,000 ton buildings in less than 2 hours? Physics is more important than conspiracies.

http://www.public-action.com/911/jmcm/physics_1.html

Then we have experts that play stupid games with math.

http://www.nistreview.org/WTC-REPORT-GREENING.pdf

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Mc = n mf ......................... (1)
where mf is the mass of one WTC floor, assumed to be 1/110 the mass of an entire WTC tower, namely mf = (510,000,000 / 110) kg ≈ 4,636,000 kg


He is dividing the total mass of one WTC tower by 110 and using that to compute the potential energy of the building. The first problem with this is that the building had to be bottom heavy. Is the 105th floor going to weigh the same amount as the 5th floor. Wouldn't the 5th floor have to support a lot more weight and therefore must be much stronger and so require a lot more steel? So his averaging portrays more mass higher up in the building grossly exaggerating the potential energy.

The second problem is the WTCs were actually 117 stories tall. The were 7 sub-basements. Wouldn't their mass be included in the total for the entire building? So he is including the mass of the basements but only dividing by 110 further throwing off his results.

I emailed Greening about this weeks ago. NO RESPONSE! lol

umbra
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