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work done and P.E |
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| Dec8-03, 12:14 AM | #1 |
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work done and P.E
Dear all
I know that E(grav) = -GmM / r, Can I use Work done = F x s to calculate the P.E between two mass of the space? Thank a lot.Good Bye Billy |
| Dec8-03, 03:26 AM | #2 |
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dw = - F dx [tex]\int ^{w'}_{0} dw = - \int ^{\infty}_{r} \frac{GMm}{x^2} dx[/tex] [tex]w' = -\frac{GMm}{r} [/tex] Where w' is the work required to take an object from infinity to a particular point in a G-field, with distant r away from the other object. |
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