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Potential Energy 
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#1
Jan513, 11:03 AM

P: 278

Hello,
Can someone please explain me: F=G m1xm2/R^2 In potential energy U=mgh Generally it is also written that: U=Gxm1xM2/r+K. How G comes into play? Also Newton's above law of Gravitation in vector form is written as: F_12=Gm1m2/r12^2 r12 Here also how G comes into play? Coming to Gravitation acceleration: If one of the masses is larger than the other, gravitational field is defines as: g=GM/r^2xr_hat How again G comes into play? If somebody can explain in a step by step method............. Thanks,  Shounak 


#2
Jan513, 11:35 AM

Mentor
P: 22,302

Uppercase G is the universal gravitational constant. It is basically just a conversion factor. It is negative by convention.



#3
Jan513, 12:41 PM

P: 278

Hello,
What is the conversion factor? Does that mean the equation for G and G are the same?  Shounak 


#4
Jan513, 03:46 PM

Sci Advisor
HW Helper
Thanks
P: 26,148

Potential Energy
Hello Shounak!
This thread is similar to your other thread, http://www.physicsforums.com/showthread.php?t=662573 Is there anything here that has not yet been answered there? 


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