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Astronomy and Cosmology
Astronomy and Astrophysics
Can the moon orbit be used as perpetual motion?
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[QUOTE="gneill, post: 6077485, member: 293536"] An orbit doesn't "propel" the orbiting object. The object is just continuously falling and missing the ground :wink: Every orbit has a finite amount of mechanical energy associated with it. Steal the energy from an orbit and eventually you don't have an orbit anymore, you've got two colliding objects. At least [USER=142]@russ_watters[/USER] ' tidal power offering has limits on how much energy can be stolen (it's a very big amount, but still limited). Eventually the (Lunar) tides will cease when the Earth's rotation becomes tidally locked with the Moon's orbit. The Earth will then always present the same face to the Moon. I wonder which hemisphere will inherit the Moon? Don't bother placing bets, the outcome won't be known for some billions of years. [/QUOTE]
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Astronomy and Cosmology
Astronomy and Astrophysics
Can the moon orbit be used as perpetual motion?
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