Is it possible to create a permanent magnet motor??

Question

Serious scientific answers only please.

This motor would run by itself.

Answer 1

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Answer 2

Magnets can create motion with attraction or repulsion - sounds like a recipe for a stand alone motor, eh? Unfortunately, when the motor turns and the magnetic field is aligned, it takes an equal amount of force to "pull" the magnets apart and the motor will merely oscillate a short time and stop (electro magnets merely "turn off" at this point and, unfortunately, this is a characteristic that isn't applicable to a permanent magnet.)

Answer 3

Yes.

Pretty much all DC (direct current) motors use permanant magnets.

The only motors that don't are induction motors (which run on AC current).

Or do you mean, is it possible to construct a motor using ONLY permanant magnets? As in, something that will spin because of the magnets, without an input of electrical energy?

No, it isn't. The simplest explanation is that, in order for a motor to move, it needs an input of energy in one form or another; otherwise, even if it's capable of spinning (or some other form of movement), it will eventually stop spinning due to friction or something of that sort, and to get it to start spinning in the first place, you still have to put in energy - it won't do it on its own.

A magnetic field is not a form of energy; it's just a force field. You can use magnetic fields to transfer energy, such as pushing one magnet with another, or sticking two together; however, in both those cases, the energy is coming from you (pushing the magnets), or is being released by the motion of the magnets (sticking them together. which is basically the same situation, in terms of energy, as dropping a rock after you have picked it up).

Answer 4

YES!!! I've done it! My motor design isn't the typical rotating electric motor that your used to though. My motor is a piston motor that runs with NO ELECTRIC input. After assembling the motor, the piston is pushed by magnetic repulsion about 1/8 inch up the cylinder. At this point the motor must be disassembled, and then reassembled when I need to use it again. With more funding, I will be able to build a larger version which I hope will push a larger piston 1/2 inch or more!

Answer 5

Electric motors have permanent magnets in them. They create the field which the induced electric magnetic field rotates (or in the case of a linear motor glides).

Perhaps you're asking a motor that runs on only magnatism?

No, that's not possible. This is what is know as a perpetual motion machine which violate the 2nd law of thermodynamics which has to do with entropy.

Answer 6

No, permanent magnet motors are DC motors that use direct current to have the other part of the motor interacting with the permanent magnet. So you have coils for the electromagnetic field. A motor has a stator and a rotor. On a permanent magnet motor, either the stator OR the rotor consists of a permanent magnet. The other part is a switchable coil-electromagnet. There is no "free-energy" out of a permanent magnet to make a motor run on its own.

Answer 7

perpetual motion machine if invented would violate the law of conservation of energy...

historically is the other way around --- the engineering failure before Newton to construct the perpetual motion machine led to the discovery ot the law of conservation of energy

Answer 8

There is no smoking gun saying why there can not be a perpetual motion machine. All I can say is that every respectable test since Newton said it is not going to happen.