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pervect
#2
Dec23-05, 12:27 PM
Emeritus
Sci Advisor
P: 7,599
Quote Quote by jhe1984
Is it correct to say that as the Earth (or any other planet I guess) gets closer to the Sun during parts of its yearly revolution, that (at incredibly small levels) gravity on Earth gets stronger (weaker?) ?
Not really. But you can say that the tides from the sun get very slightly stronger.

Surface gravity measured at any point on the Earth's surface with a gravimeter will vary slightly with time, due to tides and tidal effects.

See for instance

http://www.earthsci.unimelb.edu.au/E...TES/tidal.html

However, there should be no average change in the Earth's surface gravity due to the proximity of the sun.