How this was done in 1821.....

[Dingus Mungus]

So with no functioning device and math you either made up or copied from a website you are convinced this is the real thing. You're that sure about your analysis...

What you do not realize is that in the real world the ball has to return to its starting hieght or all it has done is convert gravitaional potential in to kinetic energy.

You keep using -MGh as your input energy... If you applied -MG of force to M it would levitate not lift, as -MG is only at equilibrium with gravity. Its not the energy input. That's a measurement in joules, of the potential energy the mass would have if dropped to its zero level or lowest point. Lets call that lowest point 0mm and pretend we live in no friction land. In JLNLabs device notes, they showed the ball self starting at 31mm which gives the ball a starting potential energy of 4.86576 mJ.

PE = 0.016 * 9.81 * 31 = 4.86576 mJ

The ball then rolled up to 35mm.
Which equates to a gain of 0.62784 mJ.

PE = 0.016 * 9.81 * 35 = 5.4936 - 4.86576 = 0.62784 mJ

But then the ball is trapped in a cog point untill gravitation potential is converted to overcome it. This is done by dropping the ball rather than continuing allong the same trajectory.

So the ball is dropped from 35mm to 0mm which converts all potential to kinetic.
Taking back the 0.62784 mJ gained and BORROWING the other 4.86576 mJ.

PE = 0.016 * 9.81 * 35 = 5.4936 mJ

This is where Naudins math goes way off from mine... I have no idea how high his ball reached nor is it clear the distance achieved up the grade, but it is clearly shown it doesn't roll out of the track whick has a max hieght of 30mm. If the ball was not able to reach its initial hieght of 31mm all you've done is converted gravitational potential to kinetic energy. The 4.86576 mJ of borrowed energy was not returned in full. Pure simple straight foreward. It's PE is a lesser value at the end of the run so gavity has been converted in to motion.

This assesment was based on a PHYSICAL MODEL with REAL DATA. While my conclusion varies greatly from the sites conclusion, Anyone who understand basic physics can see the obvious loss in PE!

http://jnaudin.free.fr/html/smotidx.htm
http://jnaudin.free.fr/images/smtstdia.gif

I don't want to be thought of as a "nay sayer" but its blatent!
~Dingus Mungus

[Omnibus]

@Dingus Mingus,

I?m not going to engage myself in that nonsense. Your ?analysis? is ridiculous and you should stop this. Read what I wrote above, try to understand it, see the experiment here: http://video.google.com/videoplay?docid=2383887636280790847, do whatever but stop posting nonsense.

[Dingus Mungus]

@Dingus Mingus,

I?m not going to engage myself in that nonsense. Your ?analysis? is ridiculous and you should stop this. Read what I wrote above, try to understand it, see the experiment here: http://video.google.com/videoplay?docid=2383887636280790847, do whatever but stop posting nonsense.

Once again all that shows is you can drop a 16g ball 8.75 inches.
You don't even need magnets for that.

The ball is placed on a track 8.75" high, the ball is lifted 0.25" to a height of 9", and then dropped 8.75". A grand total loss of 34.88436 mJ of potential energy! Congrats!

Starting PE = .016 * 9.81 * 222.25 = 34.88436 mJ

Ending PE = BIG FAT 0.00

I can't even imagine how you don't understand this. Please go now and spend 5 minutes reading the wiki page on the definition of PE aka MGh. I promise it'll make sence then.
~Dingus Mungus

[Dingus Mungus]

http://en.wikipedia.org/wiki/Potential_energy

"Potential energy is the energy available within a physical system due to an object's position in conjunction with a conservative force which acts upon it (such as the gravitational force or Coulomb force). When an object is moved from some reference position in opposition to a force, energy is expended and a potential difference is created. The energy supplied in attaining the new position is recovered when the object is allowed to return to the reference position (in other words, the energy has the potential to be released)."

[Omnibus]

No, you don't understand this and I'm not going to waste time to educate you. It's advisable to stop posting your nonsense here.