question about apple lifting
Hello everybody,
I was thinking about Aaron quote from Wikipedia regarding the lifting of that apple:
what if the apple was lifted so high into the sky that it would be in outer space (out of the gravitational field of the earth)?
this means that we invested huge energy in the apple in the form of potential energy (since this lifting would require enormous effort);
but where is this potential energy then?
let's suppose that we bring the apple in the gravitational field of the moon, and the apple will fall, releasing its potential energy previously stored; will it be the same potential energy or it will be 6 times smaller (due to gravity of the moon smaller by a 6 factor)?
where is the rest of the energy we spent lifting the apple?
Hello everybody,
I was thinking about Aaron quote from Wikipedia regarding the lifting of that apple:
what if the apple was lifted so high into the sky that it would be in outer space (out of the gravitational field of the earth)?
this means that we invested huge energy in the apple in the form of potential energy (since this lifting would require enormous effort);
but where is this potential energy then?
let's suppose that we bring the apple in the gravitational field of the moon, and the apple will fall, releasing its potential energy previously stored; will it be the same potential energy or it will be 6 times smaller (due to gravity of the moon smaller by a 6 factor)?
where is the rest of the energy we spent lifting the apple?
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