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!

Homework Help: Energy required to expand V of cylinder

  1. Dec 4, 2008 #1
    1. The problem statement, all variables and given/known data

    Calculate the work done when the volume of a cylinder is increased by 90.0 L against the atmospheric pressure. Think about the upward movement of a piston as it expands the volume of a cylinder.


    I am actually an AP Chemistry student and am supposed to do this problem using unit analysis as I am not taking AP Physics. However, I have taken Grade 11 Physics.

    Thank you for your help!


    My Work:

    Since 1 L = 0.001 m3, then 90.0 L = 0.0900 m3.

    Since 1 Pa = 1 N/m2, then 1.013E5 Pa = 1.013E5 N/m2.

    In order to get Nm = J = work:

    1.013E5 N/m2 x 0.0900 m3 = 9,117 Nm = 9117 J = 9.12 x 103 J.
  2. jcsd
  3. Dec 5, 2008 #2


    User Avatar
    Homework Helper

    That looks correct.
  4. Dec 6, 2008 #3
    Thank you for your response!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook