Can a small electric motor produce more power than it takes to run it?

Question

If a small electrcal motor turns a small flywheel which inturn turns a larger flywheel that generates more power

Answer 1

The answer is no. This is because mechanical power is lost by the friction in the motor and the electrical power is lost in the windings of the motor. If it were possible to get more power out then we could have perpetual motion which engineers have tried to look solve for centuries.
However look at refrigeration systems as there is an anomaly there with power output

Answer 2

You can use a small motor to turn a small flywheel and through gears u can possibly turn a larger flywheel that generates energy.The only problem is what supply the small electrical motor.know that u cannot feed the generated energy back to the input of the small motor.So papetual motion not possible
NOTE:A running motor output delivers.

Answer 3

We are delving into the realms of perpetual motion here, the idea that you can use an electric motor to generate enough electricity to run itself is fine until you take into account the things like friction and heat, all of which drain power and use vital energy. Until we can find some generation system which is totally frictionless and a motor which does not generate heat then the answer is a definite no. But yes on paper. Hope this makes some sense.

Answer 4

Yes, you can build a system that does this. Power is derivative of energy with respect to time. Hence if you have energy storage devices (the flywheels) in the system you can vary the power produced (as in what is or can be extracted) at any given time and this can exceed the input power. Energy must be conserved however, so the time averaged power delivered cannot exceed the input power.

Answer 5

Are you nuts? What about the first law of thermodynamics "Energy can neither be created nor destroyed" If you are not very clear of your concept then I guess you are calculating the force (which can be amplified,as in simple machines like jack or even in case of hydraulic presses where small force is used to lift a load larger than the force applied,called effort) Dude or Chick, whoever you are first make up your mind are you talking of force or power, because both are entirely different and you must learn to differentiate between them before trying to change the world with your very original idea. Hope this answers your question, if you ever make a perpetual machine inform me at [e-mail] and I will instantly give up my Chemical Engineering.Best of luck for your R&D.Hope in the process you atleast clear your basics

Answer 6

if you attach a small generator to the center of a flywheel and have it supply part of it's output to a smaller motor that is attached to a moving arm (on the top of the flywheel) that starts turning the flywheel at the outer edge (lever action, giving less resistance) and as speed is increased moves closer to the center (which would increase the speed of the disk), then you could have a resetting of the arm after optimum speed is reached. the balance of power would be net. the center motor can continue to feed the intermittent, and moving back and forth, top motor through direct feed, capacitor discharge or battery source (which is recharged by the bottom motor) (friction would be eliminated by magnetic bearings)

Answer 7

No. The catch is that the small flywheel can't turn the large one fast enough to produce even as much power as went in. Try it, and, if it works, you can go down in history as the inventor of the first successful perpetual motion machine. I'll bet you as much as you can afford to lose that it won't work, though.

Answer 8

No, This would create elctricity, but the energy lost from heat, friction and resistance would take away from the amoutn of energy transferred, in a perfect world with no friction or heat or sound or resistance, the best you could do is merely generate an equal amount of electricity with the small motor.

Answer 9

No.

Remember the law of thermodynamics: "Output can not be more than input".

Infact, there is always loss while converting energy from one form to another. In this case electric energy is being converted to mechanical energy.

You might have known that steam engines were of great help in industrialisaion in many a ways. But they were very inefficient! Their efficiency was as low as 18%.

As compared to the Steam Engines, the Diesel Engines are much more efficient (about 85%).

Answer 10

no, is right. The motors always create some friction and some electrical resistance. Thus it's "using" electricity just to keep going. (Even a battery has its own resistance.) Thus it can't even produce the same amount as it's using. But there are some space experiments (no gravity-less friction design) that get close, and last for a long time...but eventually die out.