| Topic: |
Science > Physics |
| User: |
"Don1" |
| Date: |
21 Aug 2005 06:50:22 AM |
| Object: |
Inertia: the measure of matter in a body |
Inertia is the measure of the quantity of matter in a body of matter,
and is the ratio of the (net) force exerted on, and/or by it to the
rate of forced displacement (s/t^2) that it causes.
That is the distance (d) that a body moves is a combination of the
relative change in its position due to its velocity (v), and the forced
change in that position (s), due to an impressed force: d=vxt+s/t;
where s/t is the displacement due to, and proportional to an impressed
impulse (ft).
Depending on the system of measurement: Inertia can be expressed in
slugs, grams, or kilograms.
Don
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| User: "Sam Wormley" |
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| Title: Re: Inertia: the measure of matter in a body |
21 Aug 2005 07:10:41 AM |
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Don1 wrote:
Inertia is the measure of the quantity of matter in a body of matter,
and is the ratio of the (net) force exerted on, and/or by it to the
rate of forced displacement (s/t^2) that it causes.
You are still utterly confused Shead...
Inertia
http://scienceworld.wolfram.com/physics/Inertia.html
The resistance to change in state of motion which all matter exhibits.
It's a concept, Shead, not a number with units, not a ratio.
Newton's First Law
http://scienceworld.wolfram.com/physics/NewtonsFirstLaw.html
Also called the "law of inertia," Newton's first law states that a
body at rest remains at rest and a body in motion continues to move
at a constant velocity unless acted upon by an external force.
Newton's Second Law is about "inertial mass"
http://scienceworld.wolfram.com/physics/NewtonsSecondLaw.html
A force F acting on a body gives it an acceleration a which is in
the direction of the force and has magnitude inversely proportional
to the mass m of the body: F = ma
Inertia is an intrinsic property of mass. Most of what follows is
quoted from http://www.physlink.com/ae305.cfm
Gravitational Mass F = GmM/r^2
Inertial Mass F = ma
Acceleration a = dv/dt
1) Inertial mass. This is mainly defined by Newton's law,
the all-too-famous F = ma, which states that when a force
F is applied to an object, it will accelerate
proportionally, and that constant of proportion is the
mass of that object. In very concrete terms, to determine
the inertial mass, you apply a force of F Newtons to an
object, measure the acceleration in m/s^2, and F/a will
give you the inertial mass m in kilograms.
2) Gravitational mass. This is defined by the force of
gravitation, which states that there is a gravitational
force between any pair of objects, which is given by
F = G m1 m2/r^2
where G is the universal gravitational constant, m1 and m2
are the masses of the two objects, and r is the distance
between them. This, in effect defines the gravitational
mass of an object.
As it turns out, these two masses are equal to each other
as far as we can measure. Also, the equivalence of these
two masses is why all objects fall at the same rate on
earth.
The only difference that we can find between inertial and
gravitational mass that we can find is the method.
Gravitational mass is measured by comparing the force of
gravity of an unknown mass to the force of gravity of a
known mass. This is typically done with some sort of
balance scale. The beauty of this method is that no matter
where, or what planet, you are, the masses will always
balance out because the gravitational acceleration on each
object will be the same. This does break down near
supermassive objects such as black holes and neutron stars
due to the high gradient of the gravitational field around
such objects.
Inertial mass is found by applying a known force to an
unknown mass, measuring the acceleration, and applying
Newton's Second Law, m = F/a. This gives as accurate a
value for mass as the accuracy of your measurements. When
the astronauts need to be weighed in outer space, they
actually find their inertial mass in a special chair.
The interesting thing is that, physically, no difference
has been found between gravitational and inertial mass.
Many experiments have been performed to check the values
and the experiments always agree to within the margin of
error for the experiment. Einstein used the fact that
gravitational and inertial mass were equal to begin his
Theory of General Relativity in which he postulated that
gravitational mass was the same as inertial mass and that
the acceleration of gravity is a result of a "valley" or
slope in the space-time continuum that masses "fell down"
much as pennies spiral around a hole in the common
donation toy at your favorite chain store.
Useful references for Shead
http://scienceworld.wolfram.com/physics/Inertia.html
http://scienceworld.wolfram.com/physics/MomentofInertia.html
http://scienceworld.wolfram.com/physics/Mass.html
http://scienceworld.wolfram.com/physics/Momentum.html
http://scienceworld.wolfram.com/physics/NewtonsLaws.html
http://scienceworld.wolfram.com/physics/Weight.html
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| User: "Don1" |
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| Title: Re: Inertia: the measure of matter in a body |
21 Aug 2005 07:35:21 AM |
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Don1 wrote:
Inertia is the measure of the quantity of matter in a body of matter,
and is the ratio of the (net) force exerted on, and/or by it to the
rate of forced displacement (s/t^2) that it causes.
That is the distance (d) that a body moves is a combination of the
relative change in its position due to its velocity (v), and the forced
change in that position (s), due to an impressed force: d=vxt+s/t;
where s/t is the displacement due to, and proportional to an impressed
impulse (ft).
Depending on the system of measurement: Inertia can be expressed in
slugs, grams, or kilograms.
Don
One slug is a unit of inertia and consists of three fundamental
variables: 1 slug equals 1# sec^2/foot:
One gram is a unit of inertia and consists of three fundamental
variables: 1 gram equals 1 dyne sec^2/cm:
One "kilo" is a unit of inertia and consists of three fundamental
variables: 1 kilogram equals 1 newton sec^2/meter:
Don
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| User: "Steve Ralph" |
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| Title: Re: Inertia: the measure of matter in a body |
21 Aug 2005 07:47:50 AM |
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"Don1" <dcshead@charter.net> wrote in message
news:1124627721.124799.122140@o13g2000cwo.googlegroups.com...
Don1 wrote:
Inertia is the measure of the quantity of matter in a body of matter,
and is the ratio of the (net) force exerted on, and/or by it to the
rate of forced displacement (s/t^2) that it causes.
That is the distance (d) that a body moves is a combination of the
relative change in its position due to its velocity (v), and the forced
change in that position (s), due to an impressed force: d=vxt+s/t;
where s/t is the displacement due to, and proportional to an impressed
impulse (ft).
Depending on the system of measurement: Inertia can be expressed in
slugs, grams, or kilograms.
Don
One slug is a unit of inertia
This is true, slugs don't move very fast
and consists of three fundamental
variables: 1 slug equals 1# sec^2/foot:
Whatever you say Don
sr
One gram is a unit of inertia and consists of three fundamental
variables: 1 gram equals 1 dyne sec^2/cm:
One "kilo" is a unit of inertia and consists of three fundamental
variables: 1 kilogram equals 1 newton sec^2/meter:
Don
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| User: "" |
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| Title: Re: Inertia: the measure of matter in a body |
21 Aug 2005 07:59:11 AM |
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What's a remailer? I'm a newbie.
Of course, a photon doesn't have internal structure. It along with
protons, neutrons, and electrons are our 4 fundamental particles,
cybernetic "axioms". Quantum physics is nothing more that you
physicists cataloging their properties. You don't look for structure
below an axiom - you ust note its properties. This cybernetic form
underlies everything. Cybernetics of course is the Theory of
Everything. You guys have cute ties.
- Donsky Oatsky, The Nut (Pecan) Farm, LLC. LLC in ardor to save WAD
(Worthless American Dollars). Have a nice day. Address your issues.
Oh by the way - Mr. Zick sucks dog penis.
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| User: "tj Frazir" |
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| Title: Re: Inertia: the measure of energy in a body |
21 Aug 2005 06:58:37 PM |
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The mass of a body is never constant but vieries with the energy of the
body.
Inertia is the energy mass displaces.
Dark Energy is 0 wavelength at c.
Matter takes up space ,,and more space in moton.
F is the distance from the center of mass to the center of gravity. No
exceptions.
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| User: "Schoenfeld" |
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| Title: Re: Inertia: the measure of matter in a body |
21 Aug 2005 07:01:21 AM |
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Don1 wrote:
[remove]
In physics there are 5 fundamental units:
TABLE 1 - Fundamental Units:
NAME DIMENSION SI EQUIVALENT
------------------------------------------------------------
Planck time Time (T) 5.39121 x 10-44 s
Planck length Length (L) 1.61624 x 10-35 m
Planck mass Mass (M) 2.17645 x 10-8 kg
Planck charge Electric charge (Q) 1.87555 x 10-18 C
Planck temp. Temperature (Tp) 1.41679 x 10+32 K
All remaining physical units can be derived as:
TABLE 2 - Derived Units:
NAME DIMENSIONS SI EQUIVALENT
------------------------------------------------------------
Planck energy M L^2 / T^2 1.9561 x 10+9 J
Planck force M L / T^2 1.2103 x 10+44 N
Planck power M L^2 / T^3 3.6283 x 10+52 W
Planck density M / L^3 5.1550 x 10+96 kg/m^3
Planck angular freq. 1 / T 1.8549 x 10+43 s^(-1)
Planck pressure M / (L T^2) 4.6331 x 10+113 Pa
Planck current Q / T 3.4789 x 10+25 A
Planck voltage M L^2/(T^2 Q) 1.0430 x 10+27 V
Planck impedance M L^2/(T Q^2) 2.9979 x 10+1 Ohms
All dimensionful physcal constants can be defined as:
TABLE 3 - Fundamental Constants:
NAME SYMBOL EXPRESSION
------------------------------------------------------------
Light speed c L / T
Dirac h-bar M L^2 / T
Gravitational G L^3 / ( M T^2)
Space permittivity e0 Q T^2 / (4 pi M L^3)
Boltzmann k M L^2 / (T^2 Tp)
Fundamental quantities arise in physics:
TABLE 4 - Fundamental Quantities:
NAME SYMBOL SI EQUIVALENT
----------------------------------------
Natural charge e 1.6021 x 10-19 C
It has been found that a dimensionless physical constant arises in
nature:
TABLE 5 - Dimensionless Constants:
NAME SYMBOL EXPRESSION VALUE
-----------------------------------------------------
alpha a (e / Q)^2 7.2973 x 10-3
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| User: "The Ghost In The Machine" |
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| Title: Re: Inertia: the measure of matter in a body |
21 Aug 2005 06:00:14 PM |
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In sci.math, Don1
<dcshead@charter.net>
wrote
on 21 Aug 2005 04:50:22 -0700
<1124625022.726570.304010@g49g2000cwa.googlegroups.com>:
Inertia is the measure of the quantity of matter in a body of matter,
and is the ratio of the (net) force exerted on, and/or by it to the
rate of forced displacement (s/t^2) that it causes.
Wrong. Inertia is merely a concept. The word you may be looking
for (or not, since you've been spouting variants of this drivel
for some time) is "mass".
[rest snipped]
--
#191,
It's still legal to go .sigless.
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| User: "Steve Ralph" |
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| Title: Re: Inertia: the measure of matter in a body |
21 Aug 2005 06:13:02 PM |
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"The Ghost In The Machine" <ewill@sirius.tg00suus7038.net> wrote in message
news:11cnt2-563.ln1@sirius.tg00suus7038.net...
In sci.math, Don1
<dcshead@charter.net>
wrote
on 21 Aug 2005 04:50:22 -0700
<1124625022.726570.304010@g49g2000cwa.googlegroups.com>:
Inertia is the measure of the quantity of matter in a body of matter,
and is the ratio of the (net) force exerted on, and/or by it to the
rate of forced displacement (s/t^2) that it causes.
Wrong. Inertia is merely a concept.
Until you walk into a lamppost. But then such concepts
become irellevent.
The word you may be looking
for (or not, since you've been spouting variants of this drivel
for some time) is "mass".
[rest snipped]
Is it possible to talk sense on a don thread? Maybe he has invented the
'confuseon' or maybe the 'entrop'.
entrop quantum numbers
orbitals: i + i*i
spin : both
charm : belch
strangeness: loads
sr
#191,
It's still legal to go .sigless.
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| User: "The Ghost In The Machine" |
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| Title: Re: Inertia: the measure of matter in a body |
21 Aug 2005 10:00:05 PM |
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In sci.math, Steve Ralph
<steve@steveralph.f9.co.uk>
wrote
on Mon, 22 Aug 2005 00:13:02 +0100
<43090a57$0$22920$ed2619ec@ptn-nntp-reader01.plus.net>:
"The Ghost In The Machine" <ewill@sirius.tg00suus7038.net> wrote in message
news:11cnt2-563.ln1@sirius.tg00suus7038.net...
In sci.math, Don1
<dcshead@charter.net>
wrote
on 21 Aug 2005 04:50:22 -0700
<1124625022.726570.304010@g49g2000cwa.googlegroups.com>:
Inertia is the measure of the quantity of matter in a body of matter,
and is the ratio of the (net) force exerted on, and/or by it to the
rate of forced displacement (s/t^2) that it causes.
Wrong. Inertia is merely a concept.
Until you walk into a lamppost. But then such concepts
become irellevent.
Depends on how fast one is running when walking into said lamppost. :-)
An exercise in Newton's Third, methinks: the impulse going
into the lamppost gets translated into a deflection of
the lamppost (Young's Modulus et al), and thence into an
impulse back. Depending on the elasticity of the lamppost
(most are made out of steel or concrete, but one could
envision one made out of rubber bands or chewing gum :-) ),
the impulse can be annoying or painful -- or, if one's
running at 60+ mph and is ejected from a moving vehicle,
deadly.
The word you may be looking
for (or not, since you've been spouting variants of this drivel
for some time) is "mass".
[rest snipped]
Is it possible to talk sense on a don thread? Maybe he has invented the
'confuseon' or maybe the 'entrop'.
entrop quantum numbers
orbitals: i + i*i
spin : both
charm : belch
strangeness: loads
He's certainly confused enough.
[.sigsnip]
--
#191,
It's still legal to go .sigless.
.
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| User: "Don1" |
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| Title: Re: Inertia: the measure of matter in a body |
21 Aug 2005 08:27:49 PM |
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The Ghost In The Machine wrote:
In sci.math, Don1
<dcshead@charter.net>
wrote
on 21 Aug 2005 04:50:22 -0700
<1124625022.726570.304010@g49g2000cwa.googlegroups.com>:
Inertia is the measure of the quantity of matter in a body of matter,
and is the ratio of the (net) force exerted on, and/or by it to the
rate of forced displacement (s/t^2) that it causes.
Wrong. Inertia is merely a concept. The word you may be looking
for (or not, since you've been spouting variants of this drivel
for some time) is "mass".
Oh, gosh, maybe you've got something there ghoully. Maybe that'd be why
a unit of inertia has the same name as a unit of mass!
Thanks ghoully;^)
Don
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| User: "Don1" |
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| Title: Re: Inertia: the measure of matter in a body |
22 Aug 2005 10:46:57 AM |
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Don1 writes:
Snip<
Physics has undergone a few changes in order to accomodate the metric
system: It used to be that inertia was the numerical measure of a
body's mass. Where inertia is the measure of resistance to a body's
change of motion.
Don
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| User: "Don1" |
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| Title: Re: Inertia: the measure of matter in a body |
22 Aug 2005 01:00:35 PM |
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Don1 wrote:
Don1 writes:
Snip<
Physics has undergone a few changes in order to accomodate the metric
system: It used to be that inertia was the numerical measure of a
body's mass. Where inertia is the measure of resistance to a body's
change of motion.
You know, like Newton's First Law says: 'It takes force to change a
body's motion'.
Don
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| User: "Schoenfeld" |
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| Title: Re: Inertia: the measure of matter in a body |
22 Aug 2005 11:34:51 AM |
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Don1 wrote:
Don1 writes:
Snip<
Physics has undergone a few changes in order to accomodate the metric
system: It used to be that inertia was the numerical measure of a
body's mass. Where inertia is the measure of resistance to a body's
change of motion.
Why won't you learn?
In physics there are 5 fundamental units:
TABLE 1 - Fundamental Units:
NAME DIMENSION SI EQUIVALENT
------------------------------------------------------------
Planck time Time (T) 5.39121 x 10-44 s
Planck length Length (L) 1.61624 x 10-35 m
Planck mass Mass (M) 2.17645 x 10-8 kg
Planck charge Electric charge (Q) 1.87555 x 10-18 C
Planck temp. Temperature (Tp) 1.41679 x 10+32 K
All remaining physical units can be derived as:
TABLE 2 - Derived Units:
NAME DIMENSIONS SI EQUIVALENT
------------------------------------------------------------
Planck energy M L^2 / T^2 1.9561 x 10+9 J
Planck force M L / T^2 1.2103 x 10+44 N
Planck power M L^2 / T^3 3.6283 x 10+52 W
Planck density M / L^3 5.1550 x 10+96 kg/m^3
Planck angular freq. 1 / T 1.8549 x 10+43 s^(-1)
Planck pressure M / (L T^2) 4.6331 x 10+113 Pa
Planck current Q / T 3.4789 x 10+25 A
Planck voltage M L^2/(T^2 Q) 1.0430 x 10+27 V
Planck impedance M L^2/(T Q^2) 2.9979 x 10+1 Ohms
All dimensionful physcal constants can be defined as:
TABLE 3 - Fundamental Constants:
NAME SYMBOL EXPRESSION
------------------------------------------------------------
Light speed c L / T
Dirac h-bar M L^2 / T
Gravitational G L^3 / ( M T^2)
Space permittivity e0 Q T^2 / (4 pi M L^3)
Boltzmann k M L^2 / (T^2 Tp)
Fundamental quantities arise in physics:
TABLE 4 - Fundamental Quantities:
NAME SYMBOL SI EQUIVALENT
----------------------------------------
Natural charge e 1.6021 x 10-19 C
It has been found that a dimensionless physical constant arises in
nature:
TABLE 5 - Dimensionless Constants:
NAME SYMBOL EXPRESSION VALUE
-----------------------------------------------------
alpha a (e / Q)^2 7.2973 x 10-3
Don
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| User: "Don1" |
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| Title: Re: Inertia: the measure of matter in a body |
22 Aug 2005 12:51:55 PM |
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Schoenfeld wrote:
Don1 wrote:
Don1 writes:
Snip<
Physics has undergone a few changes in order to accomodate the metric
system: It used to be that inertia was the numerical measure of a
body's mass. Where inertia is the measure of resistance to a body's
change of motion.
Why won't you learn?
I sure hope what you've got's not catching!
Don
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