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Groups > sci.physics > #521608
| From | Thomas Heger <ttt_heg@web.de> |
|---|---|
| Newsgroups | alt.conspiracy, sci.physics |
| Subject | Re: Rocky's latest brain fart |
| Date | 2015-09-17 08:26 +0200 |
| Message-ID | <d5v4okF74rpU1@mid.individual.net> (permalink) |
| References | (2 earlier) <om8pcc-ubm.ln1@mail.specsol.com> <d5urrdF55qkU1@mid.individual.net> <u0gkva1ih9nnu3vpuglqjdk71hvd3mnj1u@4ax.com> <d5uv4rF5sitU1@mid.individual.net> <mkjkvad3918rup8i9aror4diond0ofeim9@4ax.com> |
Cross-posted to 2 groups.
Am 17.09.2015 07:26, schrieb Government Shill #2: > On Thu, 17 Sep 2015 06:50:31 +0200, Thomas Heger<ttt_heg@web.de> wrote: > >> Am 17.09.2015 06:24, schrieb Government Shill #2: >> ... >>>>> >>>>> This alone is enough to disprove any nuclear devices were used on 9/11. >>>> >>>> But what was used then? >>> >>> Aeroplanes. Four honking great big aeroplanes, momentum, fire, and gravity. >>> >> >> ookeeyy.. >> >> Momentum... You know, what that is? >> >> momentum is mass times velocity >> >> >> this gives a certain 'punch' and the punched object shakes according to >> this formula: >> >> mass_a * velocity_a = mass_b *velocity_b >> >> 'a' means: an air-plane. Such a jet had a mass of roughly 60 tons: >> >> https://en.wikipedia.org/wiki/Boeing_757 >> >> The WTC towers had a mass_b of roughly 500,000 tons (each tower). >> >> The momentum of the jets would cause the tower to shake with a velocity of >> >> velocity_b=(mass_a * velocity_a)/ mass_b >> >> velocity_a I don't know, but was allegedly as high as possible, like 800 >> km/h. This is 222.2 m/s >> >> So we get >> >> velocity_b = 222*60 / 500,000 m/s >> = 0.026 m/s >> = 26 mm/s >> >> This is only a little more than the slight tremble, with what you could >> hold a cup of coffee. > > You must be the most stupid person who can type at a keyboard. > > "...momentum, fire, and gravity". Since you brought up the subject of momentum, you cannot complain afterwards, once I figured out this momentum. If you don't trust me you could eventually believe what Wikipedia has to say: https://en.wikipedia.org/wiki/Momentum Quote: "In classical mechanics, linear momentum or translational momentum (pl. momenta; SI unit kg m/s, or equivalently, N s) is the product of the mass and velocity of an object." Momentum is regarded as 'conserved'. This means, that momentum is given by one object and taken by the other object, against what the previous one is smashed. Since large objects could take more momentum, smaller objects had to hit faster. (roughly) Now we could compare the masses and estimate the amount of 'punch' applied by a flying plane upon such a skyscraper. But possibly you miss a calculation about gravity... Well, maybe I should do that. Gravity is actually easy. Acceleration is 'a' and the value for Earth gravity at ground level a_Earth_gravity = 9.81 m/s² (This acceleration is also called '1 g'.) A (non-moving) mass of 1kg applies a force of 9.81 N upon its support. The upper level of WTC 1 had maybe 40 floors above the impact zone, hence a force of roughly 10% of the buildings mass of 500,000 was pushing downwards. that is about 440,500,000 N pushing on the remains of the steel still present in these floors. Sound like a lot. But think about all the steel and concrete, upon what this force was distributed. The exact dimensions I don't know. But lets assume, that about 5% of a floor-level was actually build from steel. https://en.wikipedia.org/wiki/World_Trade_Center_%281973%E2%80%932001%29#/media/File:World_Trade_Center_Building_Design_with_Floor_and_Elevator_Arrangement.svg So we have 208 by 208 ft or 63.4 × 63.4 Meter as floor level. That is 4019 m² or 4,019,560,000 mm² 4,019,560,000 mm² * 5% = 200,978,000 mm² as cross section of the steel columns. This is only 2.2 N/mm² as pressure upon the steel. This is not very much, since steel has a MUCH higher ability to withstand pressure. Depends on the kind of steel, of course, but that resistance is about 200 to 2000 N/mm². Or: about 100 times more than there is actual pressure. The rest of the steel was used to compensate earthquakes, hurricanes, rust or miscalculations. TH
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Re: AE911 Truth & Firefighters for 911 Truth Demonstrate at NY Times (9-11-15) "Rocky" <wookiee@att.net> - 2015-09-16 17:40 -0500
Re: Rocky's latest brain fart jimp@specsol.spam.sux.com - 2015-09-16 22:56 +0000
Re: Rocky's latest brain fart Thomas Heger <ttt_heg@web.de> - 2015-09-17 05:54 +0200
Re: Rocky's latest brain fart Government Shill #2 <gov.shill@gmail.com> - 2015-09-17 14:24 +1000
Re: Rocky's latest brain fart Thomas Heger <ttt_heg@web.de> - 2015-09-17 06:50 +0200
Re: Rocky's latest brain fart Government Shill #2 <gov.shill@gmail.com> - 2015-09-17 15:26 +1000
Re: Rocky's latest brain fart Thomas Heger <ttt_heg@web.de> - 2015-09-17 08:26 +0200
Re: Rocky's latest brain fart Thomas Heger <ttt_heg@web.de> - 2015-09-17 17:25 +0200
Re: Rocky's latest brain fart jimp@specsol.spam.sux.com - 2015-09-17 16:18 +0000
Re: Rocky's latest brain fart moroney@world.std.spaamtrap.com (Michael Moroney) - 2015-09-17 17:43 +0000
Re: Rocky's latest brain fart "Rocky" <wookiee@att.net> - 2015-09-17 13:30 -0500
Re: Rocky's latest brain fart jimp@specsol.spam.sux.com - 2015-09-17 19:29 +0000
Re: Rocky's latest brain fart Thomas Heger <ttt_heg@web.de> - 2015-09-18 23:03 +0200
Re: Rocky's latest brain fart jimp@specsol.spam.sux.com - 2015-09-18 21:30 +0000
Re: Rocky's latest brain fart Thomas Heger <ttt_heg@web.de> - 2015-09-19 03:19 +0200
Re: Rocky's latest brain fart jimp@specsol.spam.sux.com - 2015-09-19 01:40 +0000
Re: Rocky's latest brain fart Thomas Heger <ttt_heg@web.de> - 2015-09-24 22:54 +0200
Re: Rocky's latest brain fart jimp@specsol.spam.sux.com - 2015-09-24 21:12 +0000
Re: AE911 Truth & Firefighters for 911 Truth Demonstrate at NY Times (9-11-15) "Rocky" <wookiee@att.net> - 2015-09-24 17:03 -0500
Re: AE911 Truth & Firefighters for 911 Truth Demonstrate at NY Times (9-11-15) Thomas Heger <ttt_heg@web.de> - 2015-09-25 08:31 +0200
Re: AE911 Truth & Firefighters for 911 Truth Demonstrate at NY Times (9-11-15) Thomas Heger <ttt_heg@web.de> - 2015-09-26 08:59 +0200
Re: AE911 Truth & Firefighters for 911 Truth Demonstrate at NY Times (9-11-15) Thomas Heger <ttt_heg@web.de> - 2015-09-26 09:46 +0200
Re: Rocky's latest brain fart Government Shill #2 <gov.shill@gmail.com> - 2015-09-19 12:34 +1000
Re: Rocky's latest brain fart Thomas Heger <ttt_heg@web.de> - 2015-09-17 20:48 +0200
Re: Rocky's latest brain fart jimp@specsol.spam.sux.com - 2015-09-17 04:22 +0000
Re: Rocky's latest brain fart "K Wills (Shill #3)" <compuelf@gmail.com> - 2015-09-17 04:04 -0500
Re: AE911 Truth & Firefighters for 911 Truth Demonstrate at NY Times (9-11-15) "K Wills (Shill #3)" <compuelf@gmail.com> - 2015-09-17 04:03 -0500
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