Pulp science fiction and vibrations

This morning I ran across Pulp-o-mizer and decided my series of posts on mechanical vibrations could use a little sensational promotion.The posts arePart I: Introduction and free, undamped vibrations.Part II: Free, damped vibrations (under-damping, critical damping, over-damping)Part III: Forced, undamped vibrations (beats, resonance)Part IV: Forced, damped vibrations (excitation frequency, response frequency, steady state solutions)