Back to Home

Blackholes2 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 II | Post
Login

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

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by David W. Anderson on November 12, 1999 23:21:08 UTC

: : : say you had an EXTREMELY dense planet, and you hollowed out a sphere in the exact center, and put a ball in the middle, could the gravity of the outside of the planet rip the ball apart into infinately many pieces? assuming the gravity on all sides of the ball was equal...

: : : is this right?

: : If you believe that gravity alone can crush a surface object (a requirement for black holes) then you must assume that, given enough mass, gravity alone can also rip an object apart. I for one don't believe either case is true. (The inner ball would be weightless) I'm sure others will argue this position, but that's why it all falls under the umbrella of THEORY.

: So, you're saying that no amount of gravity would ever possibly rip something apart? : i don't think that's right. say you have a string tied to a ceiling and then you tie the other end to a 2 ton weight, that string is going to be ripped apart. If there were no gravity then the string wouldn't break...

True, but it is not the force of the gravity acting directly on the string that breaks it. It is the added mass you tied to the string. Think of it like this: Hang the string over a mass. Now how big does the mass have to get to break the string using ONLY gravity?

Follow Ups:

Login to Post
Additional Information
Google
 
Web www.astronomy.net
DayNightLine
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2020 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