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!

I The simple connections SHM

  1. Nov 25, 2016 #1
    Revisiting my general physics notes, I noticed that you just need Newton's second law and knowing Hooke's law to predicting the motion of a simple pendulum and that of a physical pendulum. For the simple pendulum, simply consider the tangential component of the force with some trig expressions such as the small angle approximation sin(theta) = theta and theta = x/L where x is the distance covered and L the length of the pendulum. For the physical pendulum, just used newton's 2nd law in terms of torque.


    Is there anything else that you think I am missing?
     
  2. jcsd
  3. Nov 25, 2016 #2

    hilbert2

    User Avatar
    Science Advisor
    Gold Member

    The pendulum motion obeys Hooke's law only if you make the small-amplitude approximation (##\sin \theta \approx \theta##). If the motion goes through something like a 60 degree angle, you need elliptic functions to write down the trajectory of the system.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: The simple connections SHM
  1. SHM and Wave (Replies: 4)

Loading...