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!

Homework Help: Lightly damped spring system Q

  1. Mar 25, 2008 #1
    [SOLVED] Lightly damped spring system Q

    1. The problem statement, all variables and given/known data

    Consider a lightly damped mass-on-a-spring vibrational system. How should motion be initiated so that the amplitude of the spring is given by;


    2. Relevant equations

    3. The attempt at a solution

    I don't really know what is being asked "how should motion be initiated". Anyways I tried finding the solution at t=0,


    Which simplifys to [tex]\Psi(0)=-C[/tex] (as [tex]e^{0}=1[/tex] and [tex]Cos(\pi)=-1[/tex])

    So is my answer just the spring should be stretched by aplitude C to give above equation of displacement? Thanks.
  2. jcsd
  3. Mar 25, 2008 #2


    User Avatar

    Also find the initial velocity by d\psi/dt.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook