Back to Home

Blackholes Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Blackholes I | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Re: Re: Re: Earths Gravity.

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Alexander on February 22, 2001 01:30:20 UTC

Yes, you should as the teacher more details.

If to consider Earth absolutely liquid (or covered by water everywhere), then the surface of Earth (water) is always equipotential, meaning it has the same gravity on water surface everywhere -on both bulges same as on the depressions (otherwise water would immediately flow). And this is not Earth gravity only, but combined gravity of Earth and Moon.

But because the Earth crust is solid, it does not move up as much as water and thus is below equipotential on bulges and above in depressions. Thus the total gravity (Earth + Moon) on the surface of crust should be less on bulges.

Follow Ups:

    Login to Post
    Additional Information
    About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
    Unless otherwise specified, web site content Copyright 1994-2023 John Huggins All Rights Reserved
    Forum posts are Copyright their authors as specified in the heading above the post.
    "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
    are trademarks of John Huggins