## Main Question or Discussion Point

Does gravity have a limited range in which it can attract objects? I looked up on google, most people are saying it's infinite.. if it really is infinite then I'm confused, because if the denominator is infinite, then the result is just zero.. and in gravity's law F=[g(m1m2)] / r^2 .. if r is so big doesn't gravity simply become ineffective? so how would gravity have an infinite range?

Sorry if this question is silly I'm not a specialist.. I'm just curious

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tom.stoer
The basic equation is - as you have said

$F = G \frac{m_1\,m_2}{r^2}$

Of course the force F goes to zero if r goes to infinity. But that's not how we would interpret infinite range. We should better say that if we let the distance r become arbitrary large but finite, then the force F becomes small but not zero.

HallsofIvy
yeah. Something with a finite range would have some cut-off $r$ value, and for any $r$ greater than this, the force is zero. (and gravity does not have this property).