1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Surface of enclosed volume

  1. Jan 28, 2007 #1
    1. The problem statement, all variables and given/known data
    Hi,
    I have this problem:
    the surfaces r=2 and 4, [math]\theta=[/math]30 degrees and 50 degrees, [math]\phi=[/math]20 degrees and 60 degrees identify a closed surface.
    1- find the enclosed volume.
    2- Find the total area of the enclosed surface. ( I think it is a typo from the teacher. It is volume not surface)

    The first question is straigth forward
    For the secon question I have some issues.



    2. Relevant equations
    Do I need to take take each element of surface (in spherical coordinates)
    dS1=[tex]r^2[/tex] sin(theta) [tex]d\theta[/tex] [tex]d\phi[/tex]

    dS2=[tex]r[/tex]*[tex]dr[/tex][tex]d\phi[/tex]
    dS3=[tex]\sin\theta[/tex]*[tex]r[/tex][tex]dr[/tex][tex]d\phi[/tex]



    3. The attempt at a solution

    integrate the according the limits and the total are should be
    S= S1+S2+S3
    Is my reasonnig correct?
    Thank you
    B
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
    Last edited: Jan 28, 2007
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?



Similar Discussions: Surface of enclosed volume
Loading...