Ah, so that's the mistake being made the posters who have found a mountain of incorrect information there. They made their findings public. I get it.
Newton's third law: All forces in the universe occur in equal but oppositely directed pairs. There are no isolated forces; for every external force that acts on an object there is a force of equal magnitude but opposite direction which acts back on the object which exerted that external force.
It means that when part C contacts part A and applies a force FC on A, part A applies force FA on C and FC has equal magnitude but opposite direction than FA.
!
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Except for the fact that its not a closed system. You are again ignoring gravity.
"Unless acted upon by an external force" (gravity)
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I clearly was paying attention because, in reply you repeated back to me almost exactly what I was saying!!!
Except for the fact that its not a closed system. You are again ignoring gravity.
"Unless acted upon by an external force" (gravity)
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releaseeabode,
Please read the thread, "Proposed Design for Progressive Collapse Demonstration".
Do I? In The Heiwa Challenge the only force allowed is gravity. Pls re-read post #1.
Heiwa do you think we are claiming that gravity alone made the towers collapse? If you allow gravity as the only force, then your challenge is in no way, shape, or form similar to what happened to cause the WTC collapses and should be moved to another subforum.
NIST, Bazant & Co, Seffen, Mackey and others suggest that gravity alone and nothing else provided the force/energy for the WTC 1 one-way crush down on 911, i.e. upper part C + broken rubble part B (whereever it came from) destroyed lower part A by gravity only.
What other force(s) are you suggesting? Controlled demolition?
NIST, Bazant & Co, Seffen, Mackey and others suggest that gravity alone and nothing else provided the force/energy for the WTC 1 one-way crush down on 911, i.e. upper part C + broken rubble part B (whereever it came from) destroyed lower part A by gravity only.
What other force(s) are you suggesting? Controlled demolition?
NIST, Bazant & Co, Seffen, Mackey and others suggest that gravity alone and nothing else provided the force/energy for the WTC 1 one-way crush down on 911, i.e. upper part C + broken rubble part B (whereever it came from) destroyed lower part A by gravity only.
What other force(s) are you suggesting? Controlled demolition?
Lucky I have a little more intellectual honesty than most here.
Would you care to demonstrate that intellectual honesty by adding some content to this forum, rather than just cheerleading for Heiwa?
But, the plane impacts and fires are what allowed the collapse initiation. Gravity just took control from there. Besides, as you have been told a THOUSAND times, there are only TWO parts, the entire mass of the building above the collapse initiation, and the individual floor just below it. There is no monolithic "lower part A". It's just a collection of floors.
For the THOUSANDTH time. Even I get this, and you're supposed to be an engineer. Everybody else gets it. Why don't you? What makes you so much smarter than all the other engineers?
To answer your last question any smart engineer knows that a structure consists of elements connected to one another. So there are no TWO parts; one mass above and individual or a collection of floors (one part??) below in a structure like WTC 1.
The mass above happens to be a collection of floors held apart by columns. Only a fool considers that one mass, one part, or worse, one rigid block!
If you get that - the upper part (C) is just an assembly of elements - you'll soon find out that it cannot produce a one-way crush of anything similar, e.g. a part (A) below. Reason is that A will damage C at contact.
You got it?
To answer your last question any smart engineer knows that a structure consists of elements connected to one another. So there are no TWO parts; one mass above and individual or a collection of floors (one part??) below in a structure like WTC 1.
The mass above happens to be a collection of floors held apart by columns. Only a fool considers that one mass, one part, or worse, one rigid block!
If you get that - the upper part (C) is just an assembly of elements - you'll soon find out that it cannot produce a one-way crush of anything similar, e.g. a part (A) below. Reason is that A will damage C at contact.
You got it?
All I can do is repeat what FineWine typed. In fact, everybody copy this into their clipboard and simply paste it in response to every post Heiwa makes on the subject.Yes, the mass above is a collection of floors. THEY ARE ALL COLLAPSING. THEIR MASSES ARE COMBINED WHEN THEY HIT ONE FLOOR, A SINGLE FLOOR NOT CAPABLE OF SUPPORTING THE WEIGHT OF THIRTEEN FLOORS.
Only a fool considers that one mass, one part, or worse, one rigid block!