Why is it so difficult to build a perpetual motion machine?

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Why is it so difficult to build a perpetual motion machine?

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Anonymous 0 Comments

Well technically speaking there are already objects in perpetual motion, the moon and earth are both examples. There’s nothing in space so there’s nothing to slow it down so it moves perpetually.

What I think people mean is that they want something to be able to extract a surplus of energy from and have it still remain in motion the entire time. The moon is slowly moving away from earth, something is giving it additional energy to be able to grow its orbit. Energy that can be extracted from tides on Earth. This could be a theoretical perpetual motion machine but it will still stop eventually when the sun burns out.

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