1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

I Force vs Position Spring Graph Discrepancy Question

  1. May 12, 2016 #1
    I oscillated a spring attached to a force sensor above a position sensor. The position and force sensors were zeroed at the spring's equilibrium. The graph below was my result. I'm wondering as to why the graph isn't a perfect line. It makes sense that the force applied on the force sensor would be lower when the spring is rebounding up but I'm not sure why from a physics standpoint. Thanks so much
  2. jcsd
  3. May 12, 2016 #2


    Staff: Mentor

    That is from all of the dissipation mechanisms. Friction, internal heating, sound, etc. I believe that the area inside the loop is equal to the energy lost each cycle.
  4. May 13, 2016 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

  5. May 13, 2016 #4
    If your force sensor is piezoelectric, it has its own hysteresis as well.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted