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!

Effect of a spring on equations of motion

  1. Mar 31, 2015 #1
    1. The problem statement, all variables and given/known data
    I am just wondering what effect a torsional spring, with constant K, would have on the equations (1) to (5), under the section "Force analysis and system equations". The torsional spring is located where the pendulum and cart are connected
    http://ctms.engin.umich.edu/CTMS/index.php?example=InvertedPendulum&section=SystemModeling

    2. Relevant equations


    3. The attempt at a solution
    I think it would only affect the moment equation, with an extra term K(theta)?
     
  2. jcsd
  3. Apr 2, 2015 #2

    BiGyElLoWhAt

    User Avatar
    Gold Member

    Wouldn't the spring be attached to the cart? And thus exert a force on the cart as well as the rod?
     
  4. Apr 4, 2015 #3
    i don't know what forces are involved, wouldn't those just be reaction forces covered by P and N on the website
     

    Attached Files:

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted