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!

What does this mean?

  1. Apr 30, 2009 #1
    what does cross sectional area mean?

    A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 650 cm2. It is filled with oil of density 720 kg/m3.

    Is it the diameter? I dont know
     
  2. jcsd
  3. Apr 30, 2009 #2
    The cross sectional area in this case is the same as the area of a circle

    A=pi*r^2

    Cross-sectional area means pretty much what it says, the area of a cross-section of the item. In this case a piston. So if you think about a section of a piston and look at it head on, its just a circle.
     
  4. Apr 30, 2009 #3
    ok thanks
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: What does this mean?
  1. What does it mean? (Replies: 2)

Loading...