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 Moon Experiment (Posted on 2004-11-22)
Assume the moon is a perfect sphere and a straight tunnel has been drilled through the center. How long would it take a 1kg ball dropped from one end of the tunnel to reach the center? Ignore all resistances.

If a second 1kg ball is dropped 10 seconds after the first one, when and where in the tunnel would they first meet?

Idealized Moon Stats:
- Diameter: 3480 kilometers
- Mass: 7.38x10^22 kilograms (uniform density)

 See The Solution Submitted by Brian Smith Rating: 2.4000 (5 votes)

 Subject Author Date Further to Andy John 2005-12-27 08:58:14 No Subject Brandon 2005-05-16 13:50:30 ummm.. nilshady 2005-05-13 06:26:28 Correct solution Andy 2005-05-07 18:49:41 ... Wayne 2005-03-23 02:19:55 No Subject Nikkie Byars 2005-03-23 01:40:43 re: My memories from school ajosin 2005-03-02 21:48:24 My memories from school Brian Wainscott 2004-11-23 20:15:57 No Subject np_rt 2004-11-23 19:46:10 re(2): Completely Analytical Solution (Physics + Differential Calculus) Larry 2004-11-23 05:53:02 re: Completely Analytical Solution (Physics + Differential Calculus) Charlie 2004-11-23 05:04:17 re: Completely Analytical Solution (Physics + Differential Calculus) Larry 2004-11-23 03:45:55 part 2 numerical solution Charlie 2004-11-23 02:33:03 re: If This Was Earth Charlie 2004-11-23 01:41:03 If This Was Earth CeeAnne 2004-11-23 00:28:37 re(2): part 1: another method; another answer (wrong assumption) Charlie 2004-11-23 00:06:41 re: part 1: another method; another answer (wrong assumption) np_rt 2004-11-22 23:24:06 part 1: another method; another answer Charlie 2004-11-22 22:55:03 part 1: different answer Charlie 2004-11-22 20:31:17 Completely Analytical Solution (Physics + Differential Calculus) np_rt 2004-11-22 19:35:07 re: too hard RandyOrton 2004-11-22 18:47:18 too hard Danny 2004-11-22 18:24:39

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