1. Limited time only! Sign up for a free 30min personal 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!

B On what area is the pressure of the gas acting?

  1. Oct 30, 2016 #1
    I was perplexed as to why the area on which the pressure acts is 'piR^2'. Since one complete half of the sphere is in contact with the gas, hence the pressure should be 4piR^2/2 (half of the surface area of sphere i.e 2piR^2)

    Attached Files:

  2. jcsd
  3. Oct 30, 2016 #2
    Yes you are right pressure acts on half of the sphere and you also know pressure always acts perpendicular to the area so you can imagine how the pressure is acting on the sphere now you might observe if you try to resolve pressure into horizontal and vertical components the net pressure is only in vertical direction since it is mathematically cumbersome to resolve all those pressure lines in this given problem the area of the sphere has been resolved .
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted