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!

SHM in a potential well

  1. Apr 4, 2013 #1
    In the attachment below some form of link is made between F(x+xo) and dU/dx

    I understand F=-dU/dx but I do not understand the derivation shown to prove that the force constant is equal to the second derivative in the last line.

    How do they go about this proof ?


    ImageUploadedByPhysics Forums1365065923.973605.jpg
     
  2. jcsd
  3. Apr 4, 2013 #2
    As you saw, if you start with U = 1/2 kx^2 and differentiate once, you get the linear force law you want.
    Differentiate it a second time.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: SHM in a potential well
  1. Waves and SHM (Replies: 6)

  2. Advanced SHM? (Replies: 6)

Loading...