sorry dudes i cant give the tube and wieght needed for trick but here is the explanatio video.
Incredible magic! Or is it science? How the heck does this one work??!! Newton's Nightmare must be seen to be believed! An amazing display of gravity defied!
A brass weight is dropped through an aluminum tube. It rockets through, of course, falling into the spectator's hand. At the magician's command, the weight is again dropped through the tube, but now it falls in slow motion! Really!
The weight can be clearly seen floating through the tube- even while the trick is in the package, making this a virtually self-performing miracle! That's right, you don't even have to know how this works to perform it!
So simple and foolproof, this is an excellent choice for the beginning magician, as well as the seasoned pro. The blue aluminum tube is a generous 10" long- making this one show up well even for a crowd.
Demo
http://www.funinc.com/clips/newtonsweb.movDownload
http://rapidshare.com/files/99389838/Newton_s_Nightmare.zip