Re: WHAT IS THE INERTIA?

On 30 mayo, 18:25, Stamenin <task...@xxxxxxxxxxx> wrote:
because there are a lot of misunderstandigs related to the notion
inertia, i publish the following article. THE INERTIAL
FORCES AND THE LAW OF THE CONSRVATION OF THE ENERGY

I don't know about your article. Please, give me a link to access
it.
Speaking about the relations that exist between the first law of the
mechanics, the principle of the relativity, the Galilei's
transformation, and the behavior of the inertial forces and the
gravitational forces to act upon every atom of the matter, I had
omitted there to put in a first position the importance that has the
law of the conservation of the energy in these relations. Now I'd like
to remedy this omission.
The first law of the mechanics I could say is a consequence of the
law of the conservation of the energy and especially in this case of
the kinetic energy of the material bodies. So we can conclude that the
material bodies tend to keep their kinetic energy if there are not
acting upon them external forces. To change this level of kinetic
energy is needed to act upon them an external force. Then the material
body,
respecting the law of the conservation of the kinetic energy opposes
to that action with the inertial force that is produced by the
material body. This phenomenon could be compared with the phenomenon
of the production of electrical current in a generator in a power
station producer of electrical energy. To the mechanical torque
produced by the turbine, the generator opposes a torque that is
produced by the induced electrical current in the generator. In this
case we have a transformation of the mechanical energy in electrical
energy. In the case of the inertial forces we have a change of the
level of the kinetic energy of the material body and this results as
a change of the speed of the material body accordingly to the known
relation:
Ec=m.v^2/2
In such a way we can conclude that a material body posed far away in
a portion of the space where doesn't exist gravitational forces will
keep its state of staying or moving in a right line and with constant
speed.
Why do you refer only to gravitational forces and not to other types
(like electrical, nuclear, etc.)?
Of course the material body acts in this way taking in
consideration his previous state of motion, but minded people like
Newton imagined the absolute coordinate system that describes
perfectly the behavior of the material body. Evidently we with this
interpretation of the first law of the mechanics doesn't change
anything in respect to the efforts done by scientists in the past,
trying to explain why the laws of the mechanics are valid and for a
coordinate system rigidly attached to the center of the earth.
Why to mention only the Earth? Physics laws must be the same in any
part of the Universe. Perhaps is better to refer here to the centre of
mass of a selected body set.
To my opinion everything that is said in my article about the
principle of the relativity is valid and is not a need of modifying
anything. What we could conclude as a consequence of this explanation
by the use of the kinetic energy is the fact that the inertial forces
can't be overborne or annulled.
Inertial forces doesn't exist in inertial systems. Following 1905
Einstein (who considers the ether non-existing), a single body can't
be moving with respect to nothing. As a consequence, a single body
(modelled by a material point) can't have kinetic energy. If you
consider a single body, it must be at rest.

RVHG (Rafael Valls Hidalgo-Gato)

.

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