Modal Forces in Vibratory Mechanics

This lecture covers the concept of modal forces in vibratory mechanics, focusing on the application of a force F(t) = F cos(wt) on the mass in the middle. It discusses the modal forces FO = FI, F⁰ = KI, FO=F1, and the determination of maximum amplitudes for different values of @. The lecture also addresses the calculation of x(t) under specific initial conditions.