Module 9 : Forced Vibration with Harmonic Excitation; Undamped Systems and resonance; Viscously Damped                    Systems; Frequency Response Characteristics and Phase Lag; Systems with Base Excitation;                    Transmissibility and Vibration Isolation; Whirling of Shafts and Critical Speed.
Lecture 3 : Response of base excitation systems
 
Recap
  In this lecture you have learnt the following
Concept of base excitations and their governing equations
Conept of relative dispacement plot and variation of the relative displacement with base excitations
Concept of absolute displacement and relevance to
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