Re: ABOUT THE LAWS OF THE MECHANICS
- From: "Bill Hobba" <rubbish@xxxxxxxx>
- Date: Tue, 20 Nov 2007 10:01:43 GMT
"Stamenin" <tasko.s@xxxxxxxxxxx> wrote in message
news:f80f158d-3d8a-437e-a53d-f8fc74065581@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
THE LAWS OF THE MECHANICS AND
THE PRINCIPLE OF THE INSENSIBILITY
How can be applied in practice, the laws of the mechanics, is a very
important question, that I like to clarify. This is important because
as a participant on the discussions in the group Science physics
relativity realized that exist serious mistaken interpretations.
The laws of the mechanics are the following:
1) The first law of the mechanics, (the law of the inertia), or (a=0)
describes the state of staying or of motion of the material bodies
when there do not exist external forces acting upon it. It is evident
that this law is a particular case of the second law of the mechanics
for a=0, which means that upon the material body do not act any
external force and because of that there do not appear inertial force,
(Fi=0).
Superficially - yes. But on careful analysis - no. It says 'free'
particles in an inertial frame move at constant velocity. Free particles
are particles that behave as if they were the only object in the frame.
2) The second law of the mechanics, could be named and the general law
of the inertia. His mathematical relation is, (Fi=m.a). This law ever
must be correlated with the third law of the mechanics because an
inertial force does not appear without the existence of an external
force.
3) The third law of the mechanics, Fe=-Fi where Fe is an exterior
force which acts upon the material body in dynamic motion, and Fi is
the interior inertial force with which the material body opposes to
the external force Fe.
4) The law of the universal attraction, F=k.M.m/r^2. This force
appears only as a result of the existence of gravitational field.
About these relations can be realized the following properties:
a) In all these laws, the forces are related only to the motion of the
material bodies about which we know that have a mass (m). That is why
in all of them in theirs formulas appear the size mass (m).
b) The action of the gravitational forces and the inertial forces upon
our body is not sensible, because these forces act upon every atom of
our body.
And exacly why is that 'not sensible'?
We can feel only the action of a mechanical force.
Because of the misunderstanding of this property Einstein has emitted
the mistaken Principle of the equivalence of the inertial force with
the gravitational field, which evidently is an errant assumption
What is errant is your total of comprehension ability. Despite careful, no
very careful, detailed explanations you really still have no clue.
Rest of usual misconceptions snipped.
Bill
.
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