Why don't we run out of gravitational force?

AI Thread Summary
Gravitational force is generated by the curvature of spacetime caused by mass, and it does not run out because mass and energy are conserved. The discussion emphasizes that gravity is not a finite resource that can be depleted over time. As long as the mass of the planet remains intact, gravitational force will persist. The humorous mention of consuming mass in the form of cookies serves to lighten the conversation but does not detract from the scientific explanation. Ultimately, gravity remains a constant as long as the mass that creates it is not lost.
fredreload
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We know gravitational force is created from the curvature in space time by the mass of the planet, but why doesn't it run out?
 
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Why would it run out? Can you think of any reason a curvature would "run out"? If you have so please share, however if you do not then I can only advise you to revise some GR.
 
To bounce of off what Nosebgr said, gravity is the result of the curvature of spacetime, not some finite quantity that is used up over time. Since mass and energy curve spacetime, and both mass and energy are conserved, then it follows that gravity cannot be 'used up'.
 
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fredreload said:
... by the mass of the planet, but why doesn't it run out?
Because we aren't consuming the mass of the planet.
 
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A.T. said:
Because we aren't consuming the mass of the planet.
I don't know about you, but I'm about to consume the mass of about a thousand christmas cookies...
 
Drakkith said:
I don't know about you, but I'm about to consume the mass of about a thousand christmas cookies...
As long as you don't leave the planet, it is fine.
If you go to Mars, we'll have to charge mass export fees.
 
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Thread 'The Physics of unloading sand from a barge'

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