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posted by  UT Arlington on 7/14/2008 11:25:34 AM  |  status: Live  

Fluid mechanics - control volumer - chapter 5

Course Textbook Chapter Problem
Fluid Mechanics Fundamentals of Fluid Mechanics (5th) by Young, Munson, Okiishi N/A N/A
Question Details:
A vertical jet of water having a nozzle exit velocity of 10ft/s with a diameter of 1 in suspends a hollow hemisphere. If the hemisphere is stationary at an elevation of 12 in , determine its weigth.
 
 
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posted by rooya on 7/17/2008 8:23:27 AM  |  status: Live
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Response Details:
velocity f jet V=10  ft/s
jet diameter   d=1in =1/12 ft
     h=12in =1ft
weight of the plate (w)=force exerted by jet on the plate(F)
F=mass per sec *(intial velocity in the direction of jet-final velocity in the direction of jet)
F=ρaV[V(-V)]=ρaV[2V]
F=2ρa[a=crossectional area of jet]
F=
F=2.1162 lb
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