Physics in Action: The Three Balls Demo

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With all the discussion of motion in the past few physics videos, it's time for one of my favorite times in science class: lab time! So today's free Physics 1 video is a Physics in Action demonstration on The Three Balls Demo. This demonstration involves uniform circular motion, where three balls are attached to a disk by string and then spun. Since the balls are in uniform circular motion, the direction of the instantaneous velocity vector is tangent to the circle and because of this what happens when the strings are cut is very interesting. Don't want to spoil what happens, but needless to say this is a great example of Newton's first law in effect.


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This page contains a single entry by April Stockwell published on January 21, 2011 2:32 PM.

Physics 1 - Newton's First Law was the previous entry in this blog.

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