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Q & A: The strength of gravity

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Most recent answer: 05/16/2013
the strength of the pull of gravity depends on what?
- jewell flanery
The force between two objects having mass is F = -GM1M2/r2 where G is Newton's constant, the M's are the masses of the objects, and r is the distance between them.   This law has been verified at all scales from microscopic to astronomic dimensions.  You can determine G from experiment but there is no way to derive its value from any theoretical basis.
All you can say is  "What you sees is what you gets".


(published on 05/16/2013)

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