Date: Tue, 12 Oct 1999 14:31:25 -0500

Author: Gordon Smith

Subject: Re: Ball jumping out of water cup

Post:

At 09:57 PM 10/11/99 -0600, you wrote:
>If pictures are worth a thousand words, then here are
>a hundred thousand or so of the ball bouncing out of a glass.
>
>http://lahr.org/john-jan/handson/ball_in_glass_drop/ball_in_glass_drop.html

I forget, are we just looking for a different ninja column, or are we
interested in interesting fundamentals here? The reason being, could we
get an idea of the force due to the adhesion of the ball to the surface
layer of the water by comparing the heights of a ball in water, and a ball
on an identical mass of, say, lead? The difference in height should
correspond to the work used in escaping the water.

-G-
-----------------------------------------
Gordon Smith
National Center for Physical Acoustics
Coliseum Drive
University, MS 38655
slipstk@olemiss.edu

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