Re: Uh Oh, Discrepancy Alert



On Tue, 08 Aug 2006 01:11:45 GMT, BottleBob <bottlbob@xxxxxxxxxxxxx> wrote:

*FORCE*

BBB Loves Wick snips so ....

http://en.wikipedia.org/wiki/Force
[
Ancient writers, such as Aristotle, failed to appreciate that most ordinary
objects do not move because they are in the grip of opposing but equal forces.
Aristotle and others believed that it was the natural state of objects on Earth
to be motionless, and that they tended toward that state (eventually settling
down to inertness), if left alone. This was a common experience of humans with
ordinary conditions in which friction was involved, so Newton's idea that
unopposed forces naturally produce constant increases in velocities, was not an
obvious one. Frictional forces, acting in opposition to other kinds of forces,
historically tended to hide the correct mathematical relationship between simple
unopposed force and motion.

The correct behavior for unopposed forces was first discovered by Galileo in
working with gravity, although it was not until Newton that gravity was seen as
simply producing one kind of unopposed "force". Newton generalized the behavior
of constant acceleration, or constant momentum gain, to forces other than
gravity. He asserted in his second law of motion that this behavior of constant
momentum increase was characteristic of all forces-- including the "forces" of
ordinary experience, such as tension or the stress produced by pushing on an
object with a finger.
]

However the noise "force" also has other meanings, depending on context:

force into or from an action or state, either physically or metaphorically
(As in prevent motion as there is no cause for motion)

effect: (of a law) having legal validity; "the law is still in effect"
(Sort of like vectors & conservation laws <G>)

In the field of law, the word force has two main meanings: unlawful violence and
lawful compulsion.
(Sort of like "Do Not Violate a Conservation Law")

BTW, As force is a vector quantity .... <GG>.
"In physics, as defined by Asimov, a force is that which can impose a change
of velocity on a material body."
(Zero (scalar magnitude) vector force, zero change ...)

HTH
--
Cliff


.



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