Back to Home

God & Science 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 | God and Science | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Get Out The Rubber Mats

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Rich on June 17, 2002 18:26:45 UTC

Take a rubber mat. Put earth on the center of the mat. The mat now deflects symmetrically around, kinda like a cone. Put a marble at the center of the mat. Push it with a velocity x m/s. You notice it can't get up the hill caused by the earth. Push it with a velocity x + 2 m/s. You notice it gets right near the top, but then falls back down. Push it with a velocity x + 3 m/s and BOOM! The marble reaches the top without rolling back down.

This is escape velocity. Understand?

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