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Spinning Ball |
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Materials:
A ping pong ball
Some string |
Procedure:
Tape the string to the ball. Swing the ball back and forth both
with the ball stationary and with the ball spinning.
Explanation:
By spinning the ball, you are creating a secondary flow that moves the stagnation
points, giving the ping pong ball a net lift. This lift will
cause the plane of the swing to slowly rotate.
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