The Bessler Wheel, mystery solved.

[centraflow]

Except when the center of mass of lever is changing without any work spent, like when lever is free falling in space.
Never heard about parametric resonance ? It's very similar

Forest my question marks were for what he was trying to pòint out in his post, I only see my posts one on top of other and nothing more


Parametric resonance I know probably more than you, only saying because you do not know me, unlike some, and parametric resonance has nothing to do with this.


Again were you refering to the see saw or the other thread? I presume again the other thread as you are talking levers, though I supose a see saw could be deamed a lever, taken in the right context


I really do not know what you are talking about!!


Please enlighten me, maybe I'm missing something


regards


Mike

[MarkE]

To the canoeist.

The surfer is stuck in the reference frame of the water he is sitting in,, to "ride the wave" he must accelerate himself relative to the water until he matches the relative "speed" of the wave,, then he can ride it.

His cost is that input, once done then he is not moving relative to the wave and sees the water move past,, where as stuck in the water he sees the wave move past and pick him up and set him back down in that passing.

You almost have it right.  The surface tension between the water and the board is only enough to support relatively small accelerations.  If the surfer gets himself to the same speed as the wave then the surface tension will be enough to carry the surfer at a constant speed or through small accelerations.  Too much acceleration and it's wipe out time.

His forward movement was created by that input,, so a mass in motion,,,,, the change is in the distance he has traveled and the input to get there,  and that is relative to his starting point and reference frame and ending point within the starting reference frame.

No energy was hurt in this trip, not harmed in any way, nor eaten nor were any energy babies made,, but to the surfer, he expended less energy to move from point "A" to point "B" by riding the wave.  The losses he would of incurred were hidden from him by the wave,, not that they were not there because they are.

It is no different than the guy in the canoe.  If your neighbor treats you to a meal, you may not have paid the cost of the meal, but it wasn't free.

[forest]

Forest my question marks were for what he was trying to pòint out in his post, I only see my posts one on top of other and nothing more


Parametric resonance I know probably more than you, only saying because you do not know me, unlike some, and parametric resonance has nothing to do with this.


Again were you refering to the see saw or the other thread? I presume again the other thread as you are talking levers, though I supose a see saw could be deamed a lever, taken in the right context


I really do not know what you are talking about!!


Please enlighten me, maybe I'm missing something


regards


Mike

I have only a foggy idea. If a kind of lever is falling in gravity without restrictions and there is a rotational movement like in in principles presented here and there is a movement inside lever to change center of mass then the angular momentum may be much bigger  then normally. Just idea...

[MarkE]

Bingo!

Cost is cost,, or is it?  Is it not YOUR cost that counts, not how much it cost, it is what you have paid for it.

It depends:  Will your neighbor always be around treating you to your supper, or will you eventually have to fend for yourself?

[MarkE]

If nature is your neighbor,, and it is a process that you are eating,, then I think that could be given to you every day

There is a big ball of fire in the sky, nuclear heating underground, and gravitational force variations (tidal forces) sloshing the seas around above and beyond the wind effects.  Any of these energy sources can and have been tapped directly or indirectly as "renewable" energy sources. 

What is unknown is any cheat on the conservative nature of gravity.  No one but no one has figured out a circumstance where they can move a mass over a closed path and end up with net energy over the course of traversing that complete path.