DerbyCity
Dryer sheet wannabe
I found the attachment funny, entertaining and educational. I like the presentation by the energetic cub reported and the solution by the "gentelmanly" British scholar. The 1st link is the question and the 2nd the solution. (For some reason, the 1st link shows in duplicate so skip the middle one). Hint: if you are like me it's counter-intuitive.
http://www.youtube.com/watch?v=wGIZKETKKdw
http://www.youtube.com/watch?v=eCMmmEEyOO0
http://www.youtube.com/watch?v=wGIZKETKKdw
http://www.youtube.com/watch?v=eCMmmEEyOO0