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: The incredible lifting machine heat loss?

  1. Oct 16, 2005 #1
    the incredible lifting machine heat loss??

    While stumbling upon this website on the Incredible lifting machine,

    I was wondering what could be some of the reasons why the work down calculated as in mgh does not equal to the work done under the pv graph?

    I thought it should be the same? if not, that means there is heat loss by via what means???
    Last edited by a moderator: Apr 21, 2017
  2. jcsd
  3. Oct 18, 2005 #2

    Andrew Mason

    User Avatar
    Science Advisor
    Homework Helper

    What suggests to you that the increase in potential mechanical energy of the system is not equal to [itex]\int Pdv[/itex]?

    Last edited by a moderator: Apr 21, 2017
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook