While you looking for a gift, you noticed a table tennis ball suspended in midair in a jet of air blown from the outlet of a house of tank type vacuum cleaner.  The ball bounces around a bit but always moves back toward the center of the jet, EVEN if the jet is tilted a bit from the vertical. Why does the ball always get pulled back to the center? Explain the behavior using your understanding of fluid dynamics.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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While you looking for a gift, you noticed a table tennis ball suspended in midair in a jet of air blown from the outlet of a house of tank type vacuum cleaner.  The ball bounces around a bit but always moves back toward the center of the jet, EVEN if the jet is tilted a bit from the vertical. Why does the ball always get pulled back to the center? Explain the behavior using your understanding of fluid dynamics.

 
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