Recent content by The Oak

oops sry I thought it's more convienet in this way I got the Fourier series question solved. Ok for a damped harmonic oscillator the equation of motion is mx.. + cx. +kx = F0cos(wt) is that right?

Hello, Attached are two problems I can not solve, thanks for the help. The Attempt at a Solution For the first question, I understand that I need insert A1coswt+A2sinwt into the homogenous equation , but don't know what's then .. But I'm pretty much lost on both of em :(