| Topic: |
Science > Physics |
| User: |
"Don1" |
| Date: |
17 Oct 2005 07:50:38 PM |
| Object: |
Units of inertia |
Inertia is the measure of mass:
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
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| User: "KeithK" |
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| Title: Re: Units of inertia |
19 Oct 2005 01:55:06 AM |
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"Don1" <dcshead@charter.net> wrote in message
news:1129596638.085240.299200@g49g2000cwa.googlegroups.com...
Inertia is the measure of mass:
Actually, you got it backwards. Inertia is a _property_ of matter, the
tendency
of a material body to resist a change to it's state of motion.
Mass is defined as the quantitative _measure_ of an objects inertia and is
found
from m=w/g and called one slug in the english system..
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
Look, inertia is not a force; so you can't say "One unit of inertia is the
force ... ".
The definition is:
One unit of force (one pound in the English system) is that force which,
applied to
a mass of one slug, will give it an acceleration of one foot per second per
second.
(hint: f=ma and W=mg. It all works out because 1 slug weighs 32 pounds.)
cheers,
KeithK
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
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| User: "PD" |
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| Title: Re: Units of inertia |
19 Oct 2005 02:15:19 AM |
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KeithK wrote:
"Don1" <dcshead@charter.net> wrote in message
news:1129596638.085240.299200@g49g2000cwa.googlegroups.com...
Inertia is the measure of mass:
Actually, you got it backwards. Inertia is a _property_ of matter, the
tendency
of a material body to resist a change to it's state of motion.
Actually, that's not right, either, I don't think. Does an object's
inertia increase if it approaches the speed of light? Does the amount
of matter in the object?
Mass is defined as the quantitative _measure_ of an objects inertia and is
found
from m=w/g and called one slug in the english system..
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
Look, inertia is not a force; so you can't say "One unit of inertia is the
force ... ".
The definition is:
One unit of force (one pound in the English system) is that force which,
applied to
a mass of one slug, will give it an acceleration of one foot per second per
second.
(hint: f=ma and W=mg. It all works out because 1 slug weighs 32 pounds.)
cheers,
KeithK
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
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| User: "KeithK" |
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| Title: Re: Units of inertia |
19 Oct 2005 01:28:29 PM |
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"PD" <TheDraperFamily@gmail.com> wrote in message
news:1129706119.876397.135160@g47g2000cwa.googlegroups.com...
KeithK wrote:
"Don1" <dcshead@charter.net> wrote in message
news:1129596638.085240.299200@g49g2000cwa.googlegroups.com...
Inertia is the measure of mass:
Actually, you got it backwards. Inertia is a _property_ of matter, the
tendency
of a material body to resist a change to it's state of motion.
Actually, that's not right, either, I don't think. Does an object's
inertia increase if it approaches the speed of light? Does the amount
of matter in the object?
Well, that's the definition of inertia. Mass is it's quantitative measure.
An object's _energy_ (which at rest is approximated as E=mc^2)
increases with the object's velocity. So if you re-write E=mc^2
as m=E/c^2 you can think of E/c^2 as the object's _relativistic_ mass,
which does increase as E increases with higher velocities.
Mass is defined as the quantitative _measure_ of an objects inertia and
is
found
from m=w/g and called one slug in the english system..
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
Look, inertia is not a force; so you can't say "One unit of inertia is
the
force ... ".
The definition is:
One unit of force (one pound in the English system) is that force which,
applied to
a mass of one slug, will give it an acceleration of one foot per second
per
second.
(hint: f=ma and W=mg. It all works out because 1 slug weighs 32
pounds.)
cheers,
KeithK
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
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| User: "KeithK" |
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| Title: Re: Units of inertia |
19 Oct 2005 04:18:00 PM |
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"KeithK" <me@nomail.com> wrote in message
news:cfw5f.86355$lq6.85527@fed1read01...
"PD" <TheDraperFamily@gmail.com> wrote in message
news:1129706119.876397.135160@g47g2000cwa.googlegroups.com...
KeithK wrote:
"Don1" <dcshead@charter.net> wrote in message
news:1129596638.085240.299200@g49g2000cwa.googlegroups.com...
Inertia is the measure of mass:
Actually, you got it backwards. Inertia is a _property_ of matter, the
tendency
of a material body to resist a change to it's state of motion.
Actually, that's not right, either, I don't think. Does an object's
inertia increase if it approaches the speed of light? Does the amount
of matter in the object?
Well, that's the definition of inertia. Mass is it's quantitative measure.
To clarify, by "that's the definition of inertia" I'm referring to my
statement above
that you objected to: "Inertia is a _property_ of matter, the
tendency of a material body to resist a change to it's state of motion."
KeithK
An object's _energy_ (which at rest is approximated as E=mc^2)
increases with the object's velocity. So if you re-write E=mc^2
as m=E/c^2 you can think of E/c^2 as the object's _relativistic_ mass,
which does increase as E increases with higher velocities.
Mass is defined as the quantitative _measure_ of an objects inertia and
is
found
from m=w/g and called one slug in the english system..
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
Look, inertia is not a force; so you can't say "One unit of inertia is
the
force ... ".
The definition is:
One unit of force (one pound in the English system) is that force which,
applied to
a mass of one slug, will give it an acceleration of one foot per second
per
second.
(hint: f=ma and W=mg. It all works out because 1 slug weighs 32
pounds.)
cheers,
KeithK
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
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| User: "Don1" |
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| Title: Re: Units of inertia |
19 Oct 2005 06:29:55 PM |
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KeithK wrote:
"KeithK" <me@nomail.com> wrote in message
news:cfw5f.86355$lq6.85527@fed1read01...
"PD" <TheDraperFamily@gmail.com> wrote in message
news:1129706119.876397.135160@g47g2000cwa.googlegroups.com...
KeithK wrote:
"Don1" <dcshead@charter.net> wrote in message
news:1129596638.085240.299200@g49g2000cwa.googlegroups.com...
Inertia is the measure of mass:
Actually, you got it backwards. Inertia is a _property_ of matter, the
tendency
of a material body to resist a change to it's state of motion.
Actually, that's not right, either, I don't think. Does an object's
inertia increase if it approaches the speed of light? Does the amount
of matter in the object?
Well, that's the definition of inertia. Mass is it's quantitative measure.
To clarify, by "that's the definition of inertia" I'm referring to my
statement above
that you objected to: "Inertia is a _property_ of matter, the
tendency of a material body to resist a change to it's state of motion."
KeithK
It's not just a tendency Keih; it _IS_ the measure of the resistance of
a body to a change in its velocity.
An object's _energy_ (which at rest is approximated as E=mc^2)
increases with the object's velocity. So if you re-write E=mc^2
as m=E/c^2 you can think of E/c^2 as the object's _relativistic_ mass,
which does increase as E increases with higher velocities.
Mass is defined as the quantitative _measure_ of an objects inertia and
is
found
from m=w/g and called one slug in the english system..
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
Look, inertia is not a force; so you can't say "One unit of inertia is
the
force ... ".
The definition is:
One unit of force (one pound in the English system) is that force which,
applied to
a mass of one slug, will give it an acceleration of one foot per second
per
second.
(hint: f=ma and W=mg. It all works out because 1 slug weighs 32
pounds.)
cheers,
KeithK
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
.
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| User: "KeithK" |
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| Title: Re: Units of inertia |
19 Oct 2005 10:58:30 PM |
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"Don1" <dcshead@charter.net> wrote in message
news:1129764595.940044.289780@g47g2000cwa.googlegroups.com...
KeithK wrote:
"KeithK" <me@nomail.com> wrote in message
news:cfw5f.86355$lq6.85527@fed1read01...
"PD" <TheDraperFamily@gmail.com> wrote in message
news:1129706119.876397.135160@g47g2000cwa.googlegroups.com...
KeithK wrote:
"Don1" <dcshead@charter.net> wrote in message
news:1129596638.085240.299200@g49g2000cwa.googlegroups.com...
Inertia is the measure of mass:
Actually, you got it backwards. Inertia is a _property_ of matter,
the
tendency
of a material body to resist a change to it's state of motion.
Actually, that's not right, either, I don't think. Does an object's
inertia increase if it approaches the speed of light? Does the amount
of matter in the object?
Well, that's the definition of inertia. Mass is it's quantitative
measure.
To clarify, by "that's the definition of inertia" I'm referring to my
statement above
that you objected to: "Inertia is a _property_ of matter, the
tendency of a material body to resist a change to it's state of motion."
KeithK
It's not just a tendency Keih; it _IS_ the measure of the resistance of
a body to a change in its velocity.
Well, if you don't want to learn anything, fine. Get everything backwards.
Have fun. In the mean time, equations involving linear motion use mass,
not inertia, because mass is the quantitative measure of the property
called inertia.
cheers,
KeithK
An object's _energy_ (which at rest is approximated as E=mc^2)
increases with the object's velocity. So if you re-write E=mc^2
as m=E/c^2 you can think of E/c^2 as the object's _relativistic_ mass,
which does increase as E increases with higher velocities.
Mass is defined as the quantitative _measure_ of an objects inertia
and
is
found
from m=w/g and called one slug in the english system..
One unit of inertia is the force required to give a body weighing
one
pound, an acceleration of one foot per second, per second, and is
called a slug.
Look, inertia is not a force; so you can't say "One unit of inertia
is
the
force ... ".
The definition is:
One unit of force (one pound in the English system) is that force
which,
applied to
a mass of one slug, will give it an acceleration of one foot per
second
per
second.
(hint: f=ma and W=mg. It all works out because 1 slug weighs 32
pounds.)
cheers,
KeithK
One unit of inertia is the force required to give a body weighing
one
dyne, an acceleration of one centimeter per second, per second, and
is
called a gram.
One unit of inertia is the force required to give a body weighing
one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
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| User: "John Christiansen" |
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| Title: Re: Units of inertia |
20 Oct 2005 05:27:43 AM |
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"KeithK" <me@nomail.com> skrev i en meddelelse
news:CBE5f.90331$lq6.16765@fed1read01...
"Don1" <dcshead@charter.net> wrote in message
news:1129764595.940044.289780@g47g2000cwa.googlegroups.com...
KeithK wrote:
"KeithK" <me@nomail.com> wrote in message
news:cfw5f.86355$lq6.85527@fed1read01...
"PD" <TheDraperFamily@gmail.com> wrote in message
news:1129706119.876397.135160@g47g2000cwa.googlegroups.com...
KeithK wrote:
"Don1" <dcshead@charter.net> wrote in message
news:1129596638.085240.299200@g49g2000cwa.googlegroups.com...
Inertia is the measure of mass:
Actually, you got it backwards. Inertia is a _property_ of matter,
the
tendency
of a material body to resist a change to it's state of motion.
Actually, that's not right, either, I don't think. Does an object's
inertia increase if it approaches the speed of light? Does the amount
of matter in the object?
Well, that's the definition of inertia. Mass is it's quantitative
measure.
To clarify, by "that's the definition of inertia" I'm referring to my
statement above
that you objected to: "Inertia is a _property_ of matter, the
tendency of a material body to resist a change to it's state of motion."
KeithK
It's not just a tendency Keih; it _IS_ the measure of the resistance of
a body to a change in its velocity.
Well, if you don't want to learn anything, fine. Get everything
backwards.
Have fun. In the mean time, equations involving linear motion use mass,
not inertia, because mass is the quantitative measure of the property
called inertia.
cheers,
KeithK
Well Keith! Don has this 'idee fixe' that he is right and the scientific
society is wrong. He also claims that the SI system is flawed but this far
he has not been able to show with the slightest bit of evidence that it is.
John
An object's _energy_ (which at rest is approximated as E=mc^2)
increases with the object's velocity. So if you re-write E=mc^2
as m=E/c^2 you can think of E/c^2 as the object's _relativistic_ mass,
which does increase as E increases with higher velocities.
Mass is defined as the quantitative _measure_ of an objects inertia
and
is
found
from m=w/g and called one slug in the english system..
One unit of inertia is the force required to give a body weighing
one
pound, an acceleration of one foot per second, per second, and is
called a slug.
Look, inertia is not a force; so you can't say "One unit of inertia
is
the
force ... ".
The definition is:
One unit of force (one pound in the English system) is that force
which,
applied to
a mass of one slug, will give it an acceleration of one foot per
second
per
second.
(hint: f=ma and W=mg. It all works out because 1 slug weighs 32
pounds.)
cheers,
KeithK
One unit of inertia is the force required to give a body weighing
one
dyne, an acceleration of one centimeter per second, per second,
and is
called a gram.
One unit of inertia is the force required to give a body weighing
one
newton, an acceleration of one meter per second, per second, and
is
called a kilogram.
Don
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| User: "Don1" |
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| Title: Re: Units of inertia |
20 Oct 2005 11:40:11 AM |
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John Christiansen wrote:
"KeithK" <me@nomail.com> skrev i en meddelelse
news:CBE5f.90331$lq6.16765@fed1read01...
"Don1" <dcshead@charter.net> wrote
SNIP<
Well Keith! Don has this 'idee fixe'
Snip<
Don's 'idee fixe' is that he knows that the success of mass is because
they have made a Standard Unit of mass; which is called 'the kilogram
of the archives'. It's not really a kilogram - which is w/g = 9.8
newtons, divided by 9.8 m/sec^2 - but _almost_: So that when they say
f=ma, they can say: "because ma is some number of kilograms times the
acceleration: Instead of having to say the whole spiel, of f=(w/g)a.
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| User: "Don1" |
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| Title: Re: Units of inertia |
19 Oct 2005 07:47:43 AM |
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Don1 wrote:
Inertia is the measure of mass:
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
No, inertia isn't a force! Let's try that again:
Inertia is the measure of mass:
One unit of inertia is the ratio of the force, divided by the
acceleration it imparts to a body weighing one pound; of one foot per
second, per second, and is called a slug.
One unit of inertia is the ratio of the force, divided by the
acceleration it imparts to a body weighing one dyne; of one centimeter
per second, per second, and is called a gram.
One unit of inertia is the ratio of the force, divided by the
acceleration it imparts to a body weighing one newton; of one meter per
second, per second, and is called a kilogram.
Let's try that for a while, and see how it goes.
Don
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| User: "KeithK" |
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| Title: Re: Units of inertia |
19 Oct 2005 01:43:48 PM |
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"Don1" <dcshead@charter.net> wrote in message
news:1129726063.634662.307300@g47g2000cwa.googlegroups.com...
Don1 wrote:
Inertia is the measure of mass:
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
No, inertia isn't a force! Let's try that again:
Inertia is the measure of mass:
One unit of inertia is the ratio of the force, divided by the
acceleration it imparts to a body weighing one pound; of one foot per
second, per second, and is called a slug.
Inertia = F/a?? F=Ia?? The entire rest of the world knows it's F=ma.
What you have described above is _mass_, not Inertia.
KeithK
One unit of inertia is the ratio of the force, divided by the
acceleration it imparts to a body weighing one dyne; of one centimeter
per second, per second, and is called a gram.
One unit of inertia is the ratio of the force, divided by the
acceleration it imparts to a body weighing one newton; of one meter per
second, per second, and is called a kilogram.
Let's try that for a while, and see how it goes.
Don
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| User: "RP" |
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| Title: Re: Units of inertia |
17 Oct 2005 10:42:57 PM |
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Don1 wrote:
Inertia is the measure of mass:
Inertia is: The resistance to a change in velocity.
This resistance in turn is difficult to pin down, it is assumed that we
should intuitively know what this statement means. It's meaning,
however, is only that if you push on the mass it will push back. The
magnitude of the counter push doesn't change with mass, it is always
exactly equal and opposite to the applied force irrespective of mass.
The counter force is the result of conservation of momentum, a property
of spacetime. If inertia is to be made synonymous with some factor that
enters into the equations, then that factor would have to be momentum.
Richard Perry
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
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| User: "platopes" |
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| Title: Re: Units of inertia |
19 Oct 2005 02:41:58 AM |
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RP wrote:
Inertia is: The resistance to a change in velocity.
This resistance in turn is difficult to pin down, it is assumed that we
should intuitively know what this statement means. It's meaning,
however, is only that if you push on the mass it will push back. The
magnitude of the counter push doesn't change with mass, it is always
exactly equal and opposite to the applied force irrespective of mass.
A good thing since I ran out of gas last night and had to push the
old Monte a couple hundred yards. Not all laws are prohibitive in all
cases, eh?
p
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| User: "Don1" |
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| Title: Re: Units of inertia |
18 Oct 2005 05:53:15 AM |
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RP wrote:
Don1 wrote:
Inertia is the measure of mass:
Inertia is: The resistance to a change in velocity.
This resistance in turn is difficult to pin down, it is assumed that we
should intuitively know what this statement means. It's meaning,
however, is only that if you push on the mass it will push back.
Actually, masses of matter, in and of themselves are inert; and do not
push back. They just resist changes in their velocity.
The
magnitude of the counter push doesn't change with mass, it is always
exactly equal and opposite to the applied force irrespective of mass.
The counter force is the result of conservation of momentum, a property
of spacetime. If inertia is to be made synonymous with some factor that
enters into the equations, then that factor would have to be momentum.
Richard Perry
One unit of inertia is the force required to give a body weighing one
pound, an acceleration of one foot per second, per second, and is
called a slug.
One unit of inertia is the force required to give a body weighing one
dyne, an acceleration of one centimeter per second, per second, and is
called a gram.
One unit of inertia is the force required to give a body weighing one
newton, an acceleration of one meter per second, per second, and is
called a kilogram.
Don
Thanks Richard.
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| User: "Tice with a J" |
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| Title: Re: Units of inertia |
17 Oct 2005 08:13:29 PM |
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That's right. Is there anything else you'd like to add?
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| User: "" |
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| Title: Re: Units of inertia |
18 Oct 2005 05:57:32 AM |
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That's right. Is there anything else you'd like to add?
*************
Yes. 2 and 2. 4?
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| User: "Don1" |
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| Title: Re: Units of inertia |
17 Oct 2005 08:43:25 PM |
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Tice with a J wrote:
That's right. Is there anything else you'd like to add?
Can you think of something?
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