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• 11:33, 4 April 2022 Physdemo talk contribs created page Hoop and Pen (Created page with "{{NewDemo|subject=Mechanics|topic=Newton's Laws|file1=Hoop_and_Pen.gif}} Balance a pen on top of a hoop which sits on top of a narrow necked bottle. Quickly pull the hoop away and the pen will fall into the bottle. A variation of the table cloth and china trick, this is a much easier demo but take note, it does require a practiced hand. '''Location:''' * Sh. A-3")