Excellent Problem!

[HiPPiE]

I suppose Mods wouldn't like this, but I consider this a particularly excellent problem and it's not actually homework or anything... so:

http://www.physicsforums.com/showthread.php?p=722346#post722346

Very tough, very good, etc.

[Doc Al]

Why don't you get to work on it? Post your solution in that thread.