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There's no such _thing_ as a weight

There's no such _thing_ as a weight - Physics Forum

There's no such _thing_ as a weight - Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.


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  #21  
Old 03-29-2005, 07:39 PM
Don1
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Default There's no such _thing_ as a weight

TripleEight wrote:
seen.
with distance
this be a

Are you telling us that properties are constants?

Don

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  #22  
Old 03-29-2005, 08:01 PM
Don1
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Default There's no such _thing_ as a weight

PD wrote:
and
Oh yeah, I guess you did tell us that.

Well, I tell you; I don't think that force _belongs_ to either one of
them: It's the mutual force - acting and reacting - that each exerts on
the other. A lighter body would exert less force than a heavier one:
Therefore it _is_ a property of the body exerting the force, and varies
depending on the acceleration of free fall (g) at the location where it
is being exerted.

Like I've been telling you: Mass (m) is equal to the ratios f/a and
w/g!

Force is [f = (m)a = (f/a)a]!

Don


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  #23  
Old 03-29-2005, 09:28 PM
TripleEight
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Default There's no such _thing_ as a weight


"Don1" <[Only registered users see links. ]> wrote in message
news:1112122380.771051.179770@l41g2000cwc.googlegr oups.com...

When I say "constant" I meant a property that is directly related to the matter;
not constant in magnitude. "Property" means an attribute (of matter) that is
characteristic of it's class. It's almost always "constant" and is independant
of surrroundings. Now weight is not really owned by matter because weight is
just an *external* influence (force) acted on the matter.

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  #24  
Old 03-30-2005, 05:53 AM
Morituri-|-Max
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Default There's no such _thing_ as a weight


"Don1" <[Only registered users see links. ]> wrote in message
news:1112122157.345661.144810@z14g2000cwz.googlegr oups.com...


No. You want weight to be a property of matter.. unlike mass, charge, spin,
etc.. weight varies because it isn't something inherent to matter. It's an
effect based on gravity.


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  #25  
Old 03-30-2005, 11:57 AM
Don1
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Default There's no such _thing_ as a weight

Morituri-|-Max wrote:
charge, spin,
It's an

How about force: The force exerted on and/or by matter? Is it inherent
to matter?

Don

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  #26  
Old 03-30-2005, 12:36 PM
TripleEight
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Default There's no such _thing_ as a weight


"Don1" <[Only registered users see links. ]> wrote in message
news:1112183833.372093.140010@o13g2000cwo.googlegr oups.com...

If you put this into outer space well away from any significant force fields
there won't be forces or weights exerts on it. I think you're referring to
matters' own force field, right? That I think could be debated on.

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  #27  
Old 03-30-2005, 02:41 PM
PD
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Default There's no such _thing_ as a weight

Don1 wrote:
inherent

No, and this is important and it is poorly taught in most physics (and
engineering classes). Forces are by nature mutual interactions between
pairs of things. A cannot exert a force on B without B exerting an
*identical* force on A. (Now the *response* of A and B to the same
force may be different -- because A and B have different inertias, and
the response is the ratio of force to inertia.)

PD

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  #28  
Old 03-30-2005, 04:02 PM
Don1
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Default There's no such _thing_ as a weight

TripleEight wrote:
inherent
fields
referring to

Let's debate where in outer space there are no significant
gravitational force fields. I'd like to go there and escape from the
effects of gravity, on my next vacation(;^))

Don

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  #29  
Old 03-30-2005, 04:06 PM
Don1
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Default There's no such _thing_ as a weight

PD wrote:
matter.
(and
between
and

I tend to agree.

Don

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  #30  
Old 03-30-2005, 04:07 PM
Don1
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Default There's no such _thing_ as a weight

TripleEight wrote:
inherent
fields
referring to

Let's debate where in outer space there are no significant
gravitational force fields. I'd like to go there and escape from the
effects of gravity, on my next vacation(;^))

Don

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