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!

Calculate the energy lost to friction

  1. Mar 21, 2010 #1
    1. The problem statement, all variables and given/known data

    http://i43.tinypic.com/i1bq1i.jpg
    I need help with number 9

    2. Relevant equations

    Wnet=change in KE
    Wnc=Change in Energy


    3. The attempt at a solution
    so I'm assuming the energy dissipated means the work done by friction?
    so work of friction is umgcos(15)*d
    d=cos(15)h
    I got that work of friction is -9.8257
    Help?
     
  2. jcsd
  3. Mar 21, 2010 #2
    nvm I figured it out.
    .2*mgcos15*d
    and the d=h/sin15
    :approve:
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Calculate the energy lost to friction
  1. Energy Lost by Friction (Replies: 23)

Loading...