Lets say someone makes a Perpetual Motion machine?

Somehow someone came up with a Perpetual Motion Machine. After building it ended up being size of a coffee table and only outputs few watts more than it takes it. Would something that could never(at any scale) make effect power to be cost effective really change anything? Or would it just be another cool toy?Lets say someone makes a Perpetual Motion machine?Your "thought experiment" does not have to be perpetual motion. Suppose the same idea but it extracted almost all the energy from a mass. Remember E=MC虏. So if you put in 1kGm of scrap mass and it could produce a few watts for years what uses would it have?

First space travel, cost is of (almost) no object there. A few watts will operate most space probes and many satellites.

Military uses also. Again high cost can be acceptable.

To produce use for you home would be more difficult. Cost matters here. kWHrs of electricity costs the consumer only pennies. You unit might have to run it for years to break even.

Would you pay $1000 (or you local equivelent) if it took 5 years or more to break even? How about 10 years? What if it was $5000 and 5 years?Lets say someone makes a Perpetual Motion machine?
It all comes down to economics, there, hoss. Engineering determines what can be done, and economics determines what should be done. Politics determines what is done.



Your first supposition (someone invents perpetual motion) is impossible, so there's no need to add another one (scaleup is impossible). Scaleup is possible.Lets say someone makes a Perpetual Motion machine?At first, it would be another cool toy, but it would also be looked at and studied to improve. Later in the years to come it would be improved and be totally worthwhile. So even the one you talk about in your example sounds stupid, it would be the first step, which is a very important step to this science study.Lets say someone makes a Perpetual Motion machine?
I don't believe perpetual energy exists. As I recall there was a physics law about this.Lets say someone makes a Perpetual Motion machine?If someone made a perpetual motion device, it would prove that our understanding of physics is incorrect and we would revise current theories.



"Cost-effective" is a moot point in the presence of an energy-generating perpetual motion device, because one could apply the mechanism recursively to generate an unlimited supply of power.Lets say someone makes a Perpetual Motion machine?
perpetual motion would require that the kinetic energy driving the machine stay in the machine. So for it to be used to power anything some of the energy in it would have to leave the machine to provide the power, then it would no longer be perpetual motion.
I'm sure that some one would come up with something for it to do. If only a few watts, you could recharge batteries for free, or some other minor application like that.

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