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Net (total) Energy Is Zero. But There Are Pos And Neg Parts.
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Alexander on June 28, 2001 17:52:56 UTC |
Say, gravitational potential energy is always negative (gravity is attractive force), so two (or more) attracting bodies separated by some distance and NOT moving have NEGATIVE net energy. Moving and NOT attracting bodies have net POSITIVE energy. Moving And attracting each other bodies may have net energy to be negative (say, orbiting each other bodies), or positive (say, moving with more than escape velocity) or exactly zero (moving with escape velocity).
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