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!

Force vs distance graph

  1. Apr 6, 2016 #1
    1. The problem statement, all variables and given/known data
    queston 9.png


    2. Relevant equations
    W=(Force component*displacement)

    3. The attempt at a solution
    This problem uses a graph to find the Work. So I used area equations to find the Work. From 5m to 10m the Force is constant 30N. Which is applied over a displacement of 5m. So the work done from 5m to 10m is 150J. Next, from 10m to 15m the work varries. Its initially 30N then it drops down to roughly 18N. So using a triangle, .5*(30N+18N)*(5m)=120J

    Answer is 270J??
     
  2. jcsd
  3. Apr 6, 2016 #2
    Hi Le:

    Your answer looks OK to me.

    Regards,
    Buzz
     
  4. Apr 6, 2016 #3
    Thanks Buzz!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted