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!

Area under the curve in PV diagram

  1. Nov 8, 2007 #1
    Area under the curve in PV diagram(q35)

    For this question:

    What I do is to find the area of PV under the straight line, using
    (area of bigger rectangle-area of smaller rectangle)/2

    but this is not one of the choices.

    May I know how to solve this question correctly?
    Last edited: Nov 8, 2007
  2. jcsd
  3. Nov 8, 2007 #2


    User Avatar
    Staff Emeritus
    Science Advisor

    This is an incorrect interpretation of the graph.

    The process takes the gas from (V1, P1) to (V2, P2) along the diagnonal line. The work is the area under that diagonal line, and not the area difference of the two boxes. One needs to find the area of the trapezoid between the diagonal line (V1, P1) to (V2, P2) and the abscissa.
  4. Nov 8, 2007 #3
    Got it right, thanks:)
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Area under curve Date
Stress-strain (area under curve) Oct 17, 2016
Show the area under a curve Feb 26, 2016
Momentum, Impulse, Area under curve Sep 3, 2015
Finding the area under a curve Nov 3, 2012