Re: permanent magnet motor

In sci.physics, Eric Gisse
<jowr.pi@xxxxxxxxx>
wrote
on 24 Feb 2007 17:36:43 -0800
<1172367402.804156.68680@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>:

[snippage]

WHERE IS A WORKING MODEL?


He already has it (well, FSVO "working", anyway). IIRC:

[1] Suspend a magnet on a string, N/S parallel with the ground.
[2] Bring another magnet nearby, moving it with one's hand, N/S
perpendicular to the ground.

With the proper motion of the hand, the magnet on the string will rotate
but not swing.

There is, of course, the problem of imparting energy
into the dual-magnet system with the hand, so I would
propose the following simple modification, once one
has discovered the correct motion of the free magnet.
(Presumably that motion is a function of the magnet size,
magnet strength, and the moment of inertia of the lump of
magnetized material.)

[1] Suspend a magnet on a string, N/S parallel with the ground.
[2] Build a platform with a vertical dowel long enough so that it passes
by the suspended magnet. This dowel will have an adjustable subplatform
to place the spring specified in #3.
[3] Place a spring of the proper length, stiffness, and such to
reproduce the motion.
[4] Place a magnet on the spring, compressing the spring,
N/S perpendicular to the ground. This is OK, because
we are imparting "initial energy" to the system; this
"initial energy" is not unlike swinging a pendulum to
start a grandfather clock.
[5] Release, and (theoretically at least) observe perpetual motion.

Granted, there are a fair number of issues here that would
preclude it from working anyway. For starters, grandfather
clocks are powered by a rather ingenious escapement
mechanism, which transfers energy to the pendulum -- just
enough to fight friction, and keep the pendulum moving.
(The energy usually comes from suspended weights, which drop
down very slowly as the clock ticks. Smaller clocks use
mainsprings and pendulum wheels.)

And Stevin's Principle still applies.

--
#191, ewill3@xxxxxxxxxxxxx
Linux. An OS which actually, unlike certain other offerings, works.

--
Posted via a free Usenet account from http://www.teranews.com

.

Relevant Pages

  • Re: permanent magnet motor
    ... Suspend a magnet on a string, ... With the proper motion of the hand, the magnet on the string will rotate ... There is, of course, the problem of imparting energy ...
    (sci.physics)
  • Re: Is charge conserved between frames?
    ... slide the magnet through the centre along the ... In the frame of the lathe, the bar magnet held in the chuck has been centred ... > As I said, momentum divides equally, but kinetic energy doesn't. ... other bullet, now clamped firmly in a vise, 2v) at u+v. ...
    (sci.physics.relativity)
  • Re: Coulomb and Lorentz Gauge
    ... :>: phrase that matter hates EM energy but loves other matter? ... deflected by the moving field, then the moving field exerted a force ... cause a magnet to move, whether the magnet is present of not. ... We can use the particle with mass, be it electron or magnetized ...
    (sci.physics.relativity)
  • Re: Can a magnetic field do work?
    ... remember that the definition of "do work on" is "give energy ... position in the field around a mass. ... WRT the magnet gives an object an energy ... Because the bit of iron 'falling' through the magnet's field DOES ...
    (sci.physics)
  • Re: When magnets do work by lifting things, do they get colder?
    ... Rather than trying to explain away the energy by saying that energy has ... magnet, what is the energy that is constantly working against the ... and we get an attraction. ... protons and electrons are like little bells which are ...
    (sci.physics)
Quantcast