- #1
AznBoi
- 471
- 0
I'm confused about the two equations:
[tex]PE_{G}=G\frac{m1*m2}{r}[/tex]
[tex]PE_{G}=mgh[/tex]
When do you use either of these equations? Can these two equations be used interchangeably or not? Also, I think I remember reading somewhere that you need to use the 1st equation when the problem involves large masses and the 2nd equation when the problem is just talking about things on Earth.
Does anyone mind explaining when to use each of these equations and when not to? Why does it matter? Thanks.
[tex]PE_{G}=G\frac{m1*m2}{r}[/tex]
[tex]PE_{G}=mgh[/tex]
When do you use either of these equations? Can these two equations be used interchangeably or not? Also, I think I remember reading somewhere that you need to use the 1st equation when the problem involves large masses and the 2nd equation when the problem is just talking about things on Earth.
Does anyone mind explaining when to use each of these equations and when not to? Why does it matter? Thanks.