BRAVO!
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SIMPLE PHYSICS EXPOSES THE BIG 9/11 LIE -
GOVERNMENT BUILDING COLLAPSE
EXPLANATION FAILS REALITY CHECK
On September 11, 2001, the world watched in horror as the World Trade Center
(WTC) Twin Towers collapsed, killing thousands of innocent people. Videos of
the collapses were replayed ad nauseam on TV for days. About 5 hours after
the towers fell, WTC building 7 also collapsed suddenly, completely, and
straight down at near free-fall speed. This steel-framed building was not
touched by the planes that struck the towers, and had sustained relatively
minor debris damage and small fires. Nearby buildings far more heavily
damaged remained standing.
In June 2005, in an apparent response to an article by Morgan Reynolds,
former CIA Director and current Secretary of Defense Robert Gates stated,
"The American people know what they saw with their own eyes on September 11,
2001. To suggest any kind of government conspiracy in the events of that day
goes beyond the pale."
We will prove here, with scientific rigor, that it's the government's tale
that's "beyond the pale"!
Did most of the American people really understand the unprecedented
phenomena they had witnessed? Could a lack of knowledge of physics, and the
emotional shock of this mass-murderous "terrorist attack" have stymied
objective thinking and led to the blind acceptance of authoritarian
assertions?
The government and the media TOLD US what we saw. The government told us
that we had witnessed a "gravitational" collapse; what is now referred to as
a "pancake collapse". According to the government claims, the plane crashes
and subsequent kerosene (like lamp oil - jet fuel is NOT exotic) fires
heated the UL-certified structural steel to the point where it was
significantly weakened, which is very difficult to believe, never mind
repeat in an experiment. Even with massive fires that incinerate everything
else, the steel frames of such buildings generally remain standing.
According to the "pancake theory", this purported (all physical evidence was
quickly and illegally destroyed) weakening supposedly caused part of the
tower to collapse downward onto the rest of the tower, which, we've been
repeatedly told, somehow resulted in a chain reaction of the lower floors
sequentially, one at a time, yielding to the weight falling from above.
There are some problems with that theory - it does not fit the observed
facts:
* It cannot account for the total failure of the immense vertical steel core
columns - as if they were there one moment and gone the next.
* The collapse times were near free-fall, far too rapid to be due to gravity
alone. This article focuses on the latter of these two discrepancies.
Those that concocted the "pancake theory" made a fatal error - they didn't
check their story against the inviolate laws of physics! This is easy to do,
even without any physical evidence to examine. We can test that incredible
pancake tale using basic high-school physics. Let's do that - use a simple,
unassailable, incontrovertible conservation-of-energy analysis to perform a
reality check that establishes once and for all that the government, and
such government story backers as PBS, Popular Mechanics, and Scientific
American have falsified the true nature of the 9/11 disaster.
How Gravity Acts:
Sir Isaac Newton noticed that apples fell from trees. Others had also
noticed this, but none had ever devised a theory of gravity from the
observation. Over the years, mankind has learned that the force of gravity
at and near Earth's surface produces an acceleration of known constant
magnitude. That doesn't mean we know HOW it works, or WHY, but we have
become able to predict its effects with a high degree of precision and
certainty - gravity has always had the same, predictable, effect.
Galileo Galilei used the leaning tower of Pisa to demonstrate that a large
ball and a small one (of lesser mass) fell (accelerated downward) at the
same rate. Prior to Galileo, people had just assumed that heavier objects
fall faster, much the way they had assumed the Earth was flat.
So while an object of greater mass will exert more force (its weight) upon
anything supporting it against gravity's pull, it does not experience any
greater acceleration when gravity's pull is not opposed - when it is
falling. Earth's gravity at and near the surface of the planet can only
accelerate objects downward at one known, constant rate: 32 feet per second
for each second of free fall. As Galileo demonstrated centuries ago, heavier
objects are not accelerated any quicker than are lighter objects.
So Earth's gravity produces a downward acceleration of 32 feet per second
per second. This means that an object, after falling one second, will be
falling at a speed of 32 ft/sec. After the 2nd second, it will be falling at
64 ft/sec. After the 3rd second, it will be falling at 96 ft/sec., and so
on.
Further, since gravity's acceleration is constant, and an object is falling
at 32 ft/sec after one second has elapsed, we know that it has averaged 16
ft/sec for the entire distance. Thus after one second, the object has fallen
16 feet.
Scientists have derived simple free-fall equations that can be used to
harness this knowledge mathematically. These equations can be found in any
high-school physics book:
* Falling velocity = acceleration of gravity x time. (V = G x T)
And
* Distance fallen = 1/2 x acceleration of gravity x time squared. (D = 1/2
x G x T x T)
So if we want to know how far an object has free-fallen after 3 seconds:
Distance = 1/2 x 32 x 9 = 144 feet
So after 3 seconds in Earth's gravity, an object will have fallen 144 feet
and will be falling at 96 ft/sec.
Checking Our Work:
We've just solved a simple physics problem. Now let's check our work, using
conservation of energy.
We know that energy can neither be created nor destroyed - it merely changes
form. If we take the potential (in this case chemical, molecular) energy in
a barrel of oil and burn it, it changes to heat energy. When we burn
gasoline in our car's engine, we get kinetic (motional) energy, plus some
heat, as an engine is not 100% efficient. When we use our car's brakes to
bleed off some of that kinetic energy (slow down), that energy is converted
into heat (the brakes get hot). Explosives convert potential energy
[molecular or atomic] to kinetic energy (explosive force) quickly enough to
shatter or even pulverize concrete.
In the case of the free-falling object, the two kinds of energy we are
concerned with are kinetic energy and potential energy. Examples of
potential (gravitational) energy are the energy available from water stored
up high in a water tower, or a boulder perched atop a hill. If whatever is
holding it up there is removed, it will fall under the influence of
gravity's pull. As it accelerates downward, the potential energy is
converted to the kinetic energy of the object's motion.
So, as an object falls, it changes its potential energy into kinetic energy.
The equation for potential energy is:
* Potential Energy = Mass (or weight) x Gravity x Height. (PE = M x G x H)
The equation for kinetic energy is:
* Kinetic Energy = 1/2 x Mass x Velocity squared. (KE = 1/2 x M x V x V)
So let's just say, for the sake of simplicity, that our falling object has a
mass of 1. (Remember, the object's mass will affect its energy, and its
momentum, but not its rate of free-fall.)
The potential energy given up by falling 3 seconds (144 ft) is: 1 x 32 x 144
= 4608
The kinetic energy gained after falling 3 secs is 1/2 x 1 x 96 squared = 1/2
x 9216 = 4608
So, the available potential energy was converted into kinetic energy. Seeing
that energy was, in fact, conserved is how we know that the answer in the
simple case above was correct. We've checked our work, using an independent
analysis, based upon the sound physical principle of conservation of energy.
Now, and only now, we can be certain that our answer was correct.
One Little Complication - the effect of air resistance:
The free-fall equations above reflect a perfect, frictionless world. They
perfectly predict the behavior of falling bodies in a vacuum. In fact, you
may have seen a science class demonstration in which the air is pumped out
of a tube and then a feather will fall, in that vacuum, just as fast as will
a solid metal ball.
That's how parachutes work: much of the falling object's potential energy
gets expended doing the work of pushing a lot of air out of the way in order
for the object to fall. As a result, not all of the gravitational potential
energy can go towards accelerating the object downward at gravity's rate of
32 ft/sec/sec.
In other words, only when there is zero frictional resistance can any
falling object's potential energy be completely converted into kinetic
energy. Anything that resists a falling object's downward velocity reduces
its acceleration from the maximum gravitational acceleration of 32 feet per
second per second, as some of gravity's potential energy is consumed in
overcoming frictional resistance.
This explains the phenomena of "terminal velocity". The free-fall equations
predict that a falling object's velocity will continue to increase without
limit. But in air, once a falling object reaches a certain speed, its
propensity to fall will be matched by the air's resistance to the fall. At
that point the object will continue to fall, but its speed will no longer
increase over time. Another way of looking at it is this: gravity's
incessant force produces a downward acceleration, but friction with the air
creates an upward force and thus an upward acceleration. When falling at
terminal velocity, the acceleration downward equals the acceleration upward,
they cancel each other out, and a constant downward velocity is maintained.
Thus the parachute, with its high air friction resistance, allows the person
attached to it to float to earth unharmed.
A Quick Recap:
Earth's gravity causes
...
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