Gravitational Potential Energy Definition

AI Thread Summary
Gravitational potential energy should be defined as a joint property of an object and the gravitational field created by other bodies, rather than in isolation. Referring to the gravitational potential energy of an object without considering other gravitational influences is deemed incorrect. The phrase "the gravitational potential energy of the vase" is less accurate than "the gravitational potential energy of the vase-Earth system." This distinction is increasingly recognized in better scientific literature. Properly defining gravitational potential energy enhances clarity in understanding its relationship with surrounding masses.
jmsmith
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I have a technical question regarding the definition of gravitational potential energy: How correct is it to discuss/define the gravitational potential energy of object A without regard for the other bodies that are exerting a gravitational force on object A?

I find this kind of thing in science books all the time: "The gravitational potential energy of the vase is 20 J..."

How well does this compare with: "The gravitational potential energy of the vase-Earth system is 20 J..."?

I personally think the second version is better, but I have enough doubts and interest to ask.

Ultimately, how should gravitational potential energy be defined?
 
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jmsmith said:
I have a technical question regarding the definition of gravitational potential energy: How correct is it to discuss/define the gravitational potential energy of object A without regard for the other bodies that are exerting a gravitational force on object A?
It's not correct at all.

I find this kind of thing in science books all the time: "The gravitational potential energy of the vase is 20 J..."
Little by little, such sloppy usage is going away.

How well does this compare with: "The gravitational potential energy of the vase-Earth system is 20 J..."?
That's the more correct version, found in the better textbooks.

I personally think the second version is better, but I have enough doubts and interest to ask.
Good for you. :smile:

Ultimately, how should gravitational potential energy be defined?
As a joint property of the two objects and their gravitational field.
 
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