Why is it so impossible to come up with a way for heavier machinery to be run on a prepetual motor? Like a car for instance...
2007-09-25 12:03:54 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
a perpetual motor supposes that the motor does not need any energy input after it is initially started. but every motor know looses energy, so would eventually need more energy put in it.
It helps to think about where the energy is lost.
Does the motor get hot? that change in temperature means energy lost to the air that can't be recovered.
Can you hear it run? Sound is a form of energy lost that can't be recovered.
Does any part rub on another? so far we don't have any frictionless bearings and friction makes heat which again is lost energy.
a car or other moving object would have air resistance. that drag is a form of friction which makes heat and is lost energy.
so that is why there is no such thing as a perpetual motion machine
2007-09-25 12:35:49 · answer #1 · answered by Piglet O 6 · 1⤊ 0⤋
I think at this point in history, that type of motor would still be difficult to accomplish.
And "IF" someone makes that type of motor; when a load is applied to the motor, will not the motor slow down to a near stop and need an external assistance to resume the motor's speed again? That in itself will exclude itself from being called a perpetual motor.
"IF" the perpetual motor was invented, wouldn't the oil companies want to stop the motor from hitting the market? Where would the government stand on such a motor, and jobs being lost in the oil industry? Would the perpetual motor get swept under the rug for years, because of jobs lost?
Yet there are natural perpetual spinning things in outer space; the Earth is spinning at 1,038 MPH. The moon is going around the Earth at 2,290.65MPH. And the Earth goes around the sun at 107.218km/h. But actually these things are so precise that only God Himself could be controlling them.
2007-09-25 21:27:23 · answer #2 · answered by Ron 2 · 0⤊ 0⤋
Perpetual motion machines violate fundamental laws of thermodynamics and physics. They cannot exist in our universe -- no matter how large or small the 'machine' is.
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2007-09-25 19:31:40 · answer #3 · answered by tlbs101 7 · 0⤊ 0⤋
Anything can be made to run forever, but it cannot do any work. A car that doesn't go anywhere.
2007-09-25 19:28:42 · answer #4 · answered by science_joe_2000 4 · 0⤊ 0⤋