From: utzoo!decvax!harpo!eagle!mhuxt!mambo Newsgroups: net.physics Title: Re: Hole through the Earth Article-I.D.: mhuxt.107 Posted: Sat Apr 9 14:45:41 1983 Received: Sun Apr 10 06:07:56 1983 If you drop something down the hole in the middle of the earth it will exhibit oscillatory motion. (Introduction to Mechanics - 11.201) Assuming that the atmosphere does eventually fill the hole, the object will come to rest at the center of the earth after a period of time. What the atmosphere looks like in the hole I'm not quite sure of. Don't let my mechanics teacher know though. Fred - Bell Labs, Murray Hill (coop: Northeastern University, Physics Major)