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!

Force alongside the inside of a hemispherical bowl

  1. Jul 29, 2008 #1
    1. The problem statement, all variables and given/known data
    There is a bowl filled with milk with a diameter of 16cm. (The density of milk is 1050 kg/m³). Find the total force alongside the inside of the bowl.

    2. Relevant equations

    3. The attempt at a solution

    I decided to break this problem up. First of all, its the first time we've dealt with a hemisphere, so I wasn't too sure on how to approach it, but this is what I came up with:

    Force on the bottom of the bowl (a constant): Bottom: Density * Gravitational Constant * Volume = 1050*9.8*pi*8².

    Now, to find the force on the sides using integration. I decided to take a look at the bowl from a top down perspective, doing so, I get a circle. Now, I can apply integrals to calculate every 'ring' from the inside to the outside of the bowl.

    (integral from 0 to 8)
    [tex]\int[/tex]2*pi*h * sqrt(64-h²) * 1050 *9.8 dh

    I am very unsure if this method would work, but logically...it seems alright with me!
  2. jcsd
  3. Jul 29, 2008 #2
    I had a quick look and I would do exactly the same thing :smile:
  4. Jul 29, 2008 #3
    Thanks, are you sure that the force on the bottom is the right constant? going to the help center, someone said there wouldn't be any force, I just couldn't believe him.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Force alongside the inside of a hemispherical bowl
  1. Hemisphere Centre (Replies: 2)