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!

Potential energy of pendulum in terms of displacement.

  1. Mar 28, 2013 #1
    Hi guys, I'm having troubles finding how to write the potential energy of a 1D pendulum down. In terms of displacement however. This should be easy and it is, but my professor had this nice "clean" solution whereas mine is really dreadfull, any help? :)

    edit: Ok nvm guys. I was thinking I went crazy for not finding it, since I almost have my physics license. But my professor used a Taylor approximation, nothing to worry about.
    Last edited: Mar 28, 2013
  2. jcsd
  3. Mar 28, 2013 #2
    By the way this is not homework, just a serious question to try to solve coupled harmonic oscillators :(
  4. Mar 28, 2013 #3


    User Avatar
    Homework Helper

    hi, turtle :) welcome to physicsforums

    Do you still have a question about pendulums? I agree Taylor approximation is the way to go. (That's why they say 'for small angles'). Also, do you mean 2D pendulum. And what's a physics license?!
  5. Mar 29, 2013 #4
    I meant a 1D pendulum in the sense that it only oscilates in one (!) direction. Of course this could represent a real 3D pendulum oscillating along just one axis.

    Concerning the physics license, I didn't know how to sai it right, I meant physics degree or something like that. Lets just say I'm studying physics! This being the reason why I was so concerned not finding this "easy" solution :)

    Thx for offering help anyway!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook