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Work done and P.Eby BillyCheung
Tags: work 
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#1
Dec803, 12:14 AM

P: 10

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 


#2
Dec803, 03:26 AM

P: 321

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 Gfield, with distant r away from the other object. 


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