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A numerical based on thrust

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  1. Aug 4, 2015 #1
    1. The problem statement, all variables and given/known data
    A large cylindrical vessel contains water to a height of 10 m. It is found that the thrust acting on the curved surface is equal to that at the bottom. If atmospheric pressure can support a water column of 10 m, the radius of the vessel is:-
    (a) 10 m (b) 15m (c) 5 m (d) 25 m

    2. Relevant equations
    P=F/A
    Vol = πr*r*h

    3. The attempt at a solution
     
  2. jcsd
  3. Aug 4, 2015 #2
    This may be a key to help you find their relation. Can you get any idea from this information?
     
  4. Aug 4, 2015 #3

    haruspex

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    Since you have posted no attempt, I assume you are stuck on interpreting the question.

    It certainly is strange. I assume this is an upright cylinder. By "thrust acting on the curved surface" they should mean the force acting on the cylinder walls. Since force is a vector, by symmetry, the net force is zero.
    So what do you think they might mean?
     
  5. Aug 4, 2015 #4
    I stuck up in force acting on curved surface of cylinder.
     
  6. Aug 4, 2015 #5

    haruspex

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    In understanding what they mean or in calculating it?
     
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