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: Forced Oscillation Problem

  1. Nov 11, 2012 #1
    Determine the forced oscillation of a system under a force F(t) = at, if at time t = 0, the system is at rest in equilibrium (x = x' = 0)



    2. Equation of motion: x" + ω²x = at



    3. I've found the particular solution, but i just can't find the coeficients of the homogeneous solution ( x = a cos (wt+θ) or x = Acos(wt) + Bsin(wt) )...
     
  2. jcsd
  3. Nov 12, 2012 #2

    ehild

    User Avatar
    Homework Helper

    You get the coefficients of the homogeneous solution by using the initial conditions: Both X=Acos(wt)+Bsin(wt)+Xp and X' are equal to 0 at t = 0.

    ehild
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook