Jay Angler wrote:I had to look up a bit of physics to get the wording right:
https://www.eia.gov/kids/what-is-energy/laws-of-energy.phpthe law of conservation of energy says that energy is neither created nor destroyed. When people use energy, it doesn't disappear. Energy changes from one form of energy into another form of energy.
To me, the real benefit of perpetual motion machines, is what they teach us about converting energy with the fewest losses possible. Normal losses in getting "work" out of a machine are things like residual heat from friction which often can't be reused effectively.
I have seen some incredibly creative "perpetual motion" machines or low input machines that teach us a lot about how to build machines that are as efficient as possible. Some of this information was known by my ancestors, but in my life, wasn't needed because an electric winch was cheaper to buy than a properly designed block and tackle and the rope to operate it.
So please post the work you do, regardless of how effective the outcomes are, because there is learning to happen through that work. Personally, I wish the conservation of energy bug would bight a few people who create computer programs, so they would be more streamlined and use less energy!
Glenn Herbert wrote:Physics classes were a long time ago for me too
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While the equations do appear to give the lighter mass more kinetic energy, *all of the energy had to be put in from the outside to start*. You are not getting more energy than you put in. Also, the masses are not independent, but a single system that must move together and contain a single amount of total kinetic energy.
Nancy Reading wrote:
Delburt Phend wrote:
Please be patient: I have several energy producing experiments. And I will start with the simple and then the moderately complex.
Please be patient -it's late here and it's a long time since I studied physics at school!
You can take a light tube such as an arrow shaft and balance it at its center. You can then suspend 1 kg 2 cm from the center of the shaft, on one side. On the other side you can suspend .1 kg at 20 cm from the center of the arrow shaft.
The long .1 kg side rotates just as easily as the short heavy side. If you bring the heavy side to 1 m/sec then the light side is moving 10 m/sec. 1/2 * 1 kg * .1 m/sec * .1 m/sec = .005 J and 1/2 * .1 kg * 1 m/sec * 1 m/sec = .05 Joules This is an energy increase to 1000%
I think you may have a decimal place out, I make the kinetic energy of the 1kg mass one tenth that of the 0.1kg mass:
for 1kg mass: kinetic energy =1/2 x 1 x 0.1 x 0.1 = 0.01/2 = 0.005 J
for 0.1kg mass ke=ineteic energy = 1/2 x 0.1 x 1 x 1 = 0.1/2 = 0.05 J
I have conducted experiments and this is exactly what happens. I also used multiple radius pulleys to increase drop distance and mass.
The speed that the 1 kg mass can obtain is shown to use by Atwood’s machines. An extra 1 kg on either side will give an acceleration of 1/3 * 9.81 m/sec/sec. To get to a speed of 1 m/sec the extra 1 kg has to drop .1529 m.
I'm not familiar with Atwood's machine but from wikipedia it is a perfect pulley system to "verify the mechanical laws of motion with constant acceleration"
If two .1 kg are on each end and are moving 10 m/sec they both will rise 5.097 m, that is .2 kg at 5.097 m = .2 kg * 5.097 m * 9.81 N/kg = 10 J. And you used 1 kg * .1529 m * 9.81 N/kg = 1.5 J
This is where you've lost me I'm afraid. what ends are the 0.1kg masses on? The Atwood pulley machine? But I think one will rise and one will fall.
I wonder if you have forgotten that work done is also proportional to distance moved? Or perhaps I have missed something in your arrangement.
Glenn Herbert wrote:We are always listening
However, we will not uncritically accept any old claim; it needs to be backed up with evidence (preferably a working model). What is your idea, and what sites are you finding information from?
John Wolfram wrote:
Greg Martin wrote:Nature does "perpetual" motion all the time. Diffusion, electrons traveling around in their orbitals, planets zipping around their stars. It's just a question about how to make a device. No, I'm not saying I have any ideas for this
Perpetual motion is one thing, getting work out is quite another.
Each year as it travels around the sun, the earth slows down by about 3 nanometers per second.
https://www.forbes.com/sites/startswithabang/2020/12/04/ask-ethan-does-earth-orbit-the-sun-more-slowly-with-each-new-year/?sh=242fa0e75b8f