Recent content by MahaX

  1. M

    How Do You Solve the Coefficients for a Forced Oscillation Equation?

    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 (...
  2. M

    How to Approximate sqrt(x^2 - l^2) - l Using x^2/2l for x << l

    Got it. Thaks!
  3. M

    How to Approximate sqrt(x^2 - l^2) - l Using x^2/2l for x << l

    Sorry, I mean \sqrt{\ell^2+x^2}\
  4. M

    How to Approximate sqrt(x^2 - l^2) - l Using x^2/2l for x << l

    I need to show that: sqrt(x^2 - l^2) - l ≈ {x^2}/{2l} 2. That should be valid for x << l 3. First I've tried to isolate l in the sqrt, but it got me nowhere. Anyone could show me a simple way to solve this?