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problem with gravitation formula...

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LAN_403

waffle

Mon Jun 23 2008, 03:41PM

Registered Member #642 Joined: Fri Apr 13 2007, 10:19PM
Location:
Posts: 15

So we learned a general formula for gravitation in physics the other day and I got to thinking about it...
The formula was F = Gm1m2/r^2. What if two objects where touching each other? Wouldn't R, the radius between the two objects be zero? And wouldn't that mean that F, the force between them, would jump to infinity and that the two objects would be "stuck together" forever?
Some possible conclusions...
1. I'm stupid
2. Two objects can never "touch"
3. for some reason R would not be zero.

Shaun

Mon Jun 23 2008, 03:45PM

Registered Member #690 Joined: Tue May 08 2007, 03:47AM
Location: New Jersey, USA
Posts: 616

The radius is measured from the center of one object to the center of the other.

waffle

Mon Jun 23 2008, 03:47PM

Registered Member #642 Joined: Fri Apr 13 2007, 10:19PM
Location:
Posts: 15

Oh, duh. Thank you.

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