so why does G=(m1*m2)/r^2?

I've been trying to figure that one out for a while..... though it seems like pretty much everybody has. I think if you figured that out, you'd be a rich man.

/thread jack

 

Because that equation is only applicable to point-size masses ; people mistake it for spherical masses with constant densities (that's why they can't determine that r>=r1+r2 [r1 and r2 are the radii of both masses] and so if you look at the domain of values, you'll see you're missing a set of possibilities.

Look up Gauss's theorem, it should help you.

EDIT:

Also, consider this (God you've made me horny):

Say r = 0 for your equation; whereas r is the distance between the cg of two objects [spheres, for our example ] you can say:
mass m1 & m2
(Because, for our sake, we're assuming r = 0)
F then becomes = Infinite

So then function (F) yields a vertical asymptote at point r = 0 ; therefore, we can say the function fails.

 

nerds rule

 

Not enough people?

 

Yeah, I know of like four other people from this forum who live in this area, but I haven't met anybody yet.

 

Hey, hey, our A4's are subject to the laws of physics, which we can then use to determine possible limits of our car and how to push them there. Wouldn't you want to know how to do that?

 

hey elitetuning if you wanna trade for the winter, you can live up here in NY and ill move to FL. and the cars gotta stay where they are..sorry. you wouldnt want that salt on that car anyways. haha.

 

Snow is good if it is in the mountains. Sure its nice when its fresh, but as soon as it starts to melt, I hate it. If I lived somewhere that snowed in the mountains but never went below 70 in the city, then I would like that. Maybe I should move to southern cali. It's kinda like that here, except we get snow in the mountains, and then in the city it has two seasons, one wet drizzle that lasts for 9 months, and 3 months of clear weather in the high 70s low 80s. By the way, your car looks awesome. I really like you rims!

 

Haha I always get tickets when it snows for drifting and doin doughnuts in parking lots. Haha i did get away from one last winter though in my van. His cruiser was all over the place. Stupid Cops.

 

You live in Seattle, too? Damn, we're starting to flourish like terrible acne. We have like five people now in the pacific NW who post on this forum.