Two horizontal plates are spaced 3 in. apart. The space between the plates is filled with mercury at 90 ° F . The upper plate is moving at 3 ft /sec, (a) Why does the liquid velocity vary linearly between the plates ?  (b ) Calculate the shear stress at a plane 1 in. from the slower moving plate. (c) Calculate the momentum flux at the surface of the faster moving plate.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Two horizontal plates are spaced 3 in. apart. The space
between the plates is filled with mercury at 90 ° F . The upper plate
is moving at 3 ft /sec,

(a) Why does the liquid velocity vary linearly between the plates ? 

(b ) Calculate the shear stress at a plane 1 in. from the slower
moving plate.
(c) Calculate the momentum flux at the surface of the faster
moving plate.

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