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!

Simple Harmonic Motion Problem

  1. Mar 5, 2014 #1
    1. What is the difference between ψ = Amod(t) cos (wavt)and the simple harmonic oscillator?

    3. A. The amplitude is time dependent
    B. The amplitude,Amod , is twice the amplitude of the simple harmonic oscillator, A.
    C. The oscillatory behavior is a function of ? instead of the period, T.

    I'm not sure what the difference is. I thought that the equations are similar but that was incorrect.
     
  2. jcsd
  3. Mar 6, 2014 #2

    BvU

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    What is ψ for a simple harmonic oscillator ?
     
  4. Mar 6, 2014 #3
    Simple harmonic oscillator:
    ψ = 2A[cos(wavt) cos(1/2 wbeatt)]

    Amod (t) = 2Acos(1/2 wbeatt)

    In the book, it says the maximum amplitude Amod of the wave changes with time. Would that mean it is A?
     
  5. Mar 7, 2014 #4

    BvU

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    My simple harmonic oscillator ##\ddot x + \omega^2 x = 0 ## doesn't have a beat frequency. Only ##A\cos(\omega t + \phi)## with ##A## and ##\phi## constant.
     
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: Simple Harmonic Motion Problem
Loading...