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Pepealej
Pepealej is offline
#3
Jan7-13, 05:49 PM
P: 20
From a point bellow? Hmmm, good question.

Gravity bellow the surface of the earth is proportional to r, not 1/r^2. Hence I should consider another expression for the potential energy.

But, anyway, this is not the case. The expression for the potential energy is unique. :S I'm getting confused.