Question Perpetual Motion and magnets...?
Second question of mine here... Okay, if you had a non-magnetic tube, and inside this tube were three magnets. The magnet in the center is free to spin around and thus exert it's negative and positive forces to different ends of the tube. Now, attach to the same point on the central magnet two small strings connected to the other two magnets, and another small string connecting the two side magnets. Have both end magnets have the same polarity toward the center magnet(lets say it's the negative side for this). You start the magnets off with one close to the center (magnet1) magnet and one away (magnet2). Magnet2 is far and thus it's string is extending so that only the negative portion of the center magnet is facing Magnet1. Being repelled away by the center magnet, magnet1 will pull it's string tight and thus turn the center magnet and at the same time pull magnet2 toward the center. Magnet2 would then be repelled by the center magnet and would pull it's string to cause the center magnet to turn again and pull magnet1 to the center. Wouldn't this create perpetual motion? Even though you'd need to use some for of energy to start the process, wouldn't the repelling of the magnets and pull of the center magnet when it's opposite faces one of the side magnets create it's own motion?

Best Answer Energy will be lost in each pull of the string. Eventually the magnets will reach a equilibrium state.

Question Perpetual motion with earth magnets. Science Fair. Need examples DONT NEED STUPID or "CAN NOT HAPPEN" comments
I am trying to research a more in depth way of discovering perpetual motion. The best I can figure out is magnets. Although they because useless overtime it is the beset in terms of efficency. Any ideas that might work? Like the nail and 1/2 watt bulb?

Best Answer You can't make anything with "real perpetual motion", but you can make devices that keep extracting power from their surroundings as long as the power source is available and they remain in working order. A science fair project explaining the difference might work. In principle, you can extract energy from the earth's rotation. It would seem as though you could do so with a pendulum or gyroscope You could have a Foucault pendulum with a piece from an old-fashioned grandfather clock that keeps the pendulum swinging despite friction, only driven by the apparent rotation of the pendulum. Or you could have a gyroscope that's kept turning by its own precession. Either way, what would make or break the project is the writing along with it. You would need to write about Foucault pendulums or precession of gyroscopes, but you would also need to write about conservation of angular momentum, and explain why it's a problem for the device in question, and what in the real world actually *does* extract energy from the earth's rotation.

Question can u make a perpetual motion machine with magnets?


Best Answer Here are a few working examples:- 1. The drinking bird toy (the energy comes from small ambient temperature gradients and evaporation, and harnessing the small power output would likely disrupt the working cycle). 2. A capillarity based water pump: in this case, energy would again come from small ambient temperature gradients and vapour pressure differences, although it would be far too easy for the pump to stop functioning. 3. A Crookes radiometer, a partial vacuum glass container with a lightweight propeller moved by (light-induced) temperature gradients. 4. Any device picking minimal amounts of energy from the electromagnetic radiation around it. Some modern smart labels (RFID chips) actually work based on that principle, using the same electromagnetic field used for "reading" them as their powersource. 5. In the Atmos clock the vapor pressure of ethyl chloride changes with temperature and winds up the clock spring.