Question

Two thin flat plates, tilted at an angle α , are placed in a tank
of liquid of known surface tension Y and contact angle θ ,
as shown in Fig. C1.3. At the free surface of the liquid in
the tank, the two plates are a distance L apart and have
width b into the page. The liquid rises a distance h between
the plates, as shown.
( a ) What is the total upward ( z -directed) force, due to surface
tension, acting on the liquid column between the
plates?
( b ) If the liquid density is ρ , fi nd an expression for surface
tension Y in terms of the other variables.

C1.3
DI
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Transcribed Image Text

C1.3 DI

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Fluid Mechanics

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