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Is gravitational attraction finite?

  1. Jan 6, 2010 #1
    Is there a distance where the curvature in spacetime created by an object's mass ends? Is it a finite gravity well or does the curvature just get infinitely weaker?
     
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  3. Jan 6, 2010 #2

    HallsofIvy

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    Both Newton's and Einstein's theories of gravity, as far as I know, give a gravity field that extends infinitely, approaching 0 as the distance approaches infinity.
     
  4. Jan 6, 2010 #3
    So if gravitational attraction is infinite, does that mean there is no such thing as flat, empty spacetime? Is all spacetime warped in some way or another?
     
  5. Jan 6, 2010 #4

    Vanadium 50

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    There's not even such thing as empty space. Look around you at night - space is filled with stuff.

    However, that doesn't mean that flat spacetime is not a useful idealization, like a frictionless plane or a stretchless rope.
     
  6. Jan 6, 2010 #5
    Yea empty probably wasn't the best word choice. I meant a region of spacetime unaffected by any objects/their gravitational pull.
     
  7. Jan 6, 2010 #6
    I'd imagine that there must be a point in space where the sum of gravitational components is 0. but for the sake of your question,there is no where in space unaffected by a force.
     
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