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posted by  Whoever on 11/4/2009 12:16:18 PM  |  status: Live  |  Earned Karma: 50

Help me - Fluids

Course Textbook Chapter Problem Needs by
General Physics N/A N/A N/A 11/5/2009 at 10:00:00 AM
Question Details:
A manometer contains two different fluids of different densities. Both sides are open to the atmosphere. Which pair(s) of points in the figure have equal pressure?
a) P1 = P5
b) P2 = P5
c) P3 = P4
d) Both a) and c)
e) Both b) and c)
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posted by jerry2009 on 11/4/2009 11:37:13 PM  |  status: Live
Asker's Rating: Helpful   
Response Details:

    As both sides are open to the atmosphere, the pressure at point 1 and pressure at point 5 are equal to the

    Atmospheric pressure.

    Pressure at point 1 ( P1 ) = Pressure at point 5 ( P5 ) = Atmospheric pressure
   
    Hence,  P1 = P5

    Pressure at point 3 ( P3 ) = Atmospheric pressure + pressure exerted by above liquid column

    Pressure at point 4 ( P4 ) = Atmospheric pressure + pressure exerted by above liquid column

    As the points 3 and 4 are in equilibrium, P3 = P4

    Ans: option d : both a and c

   
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