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 1 : Harmonic vibration of single DOF system
Objectives
    In this lecture you will learn the following
Equation of motion for forced vibration
Response to Harmonic Force
Dynamic magnification factor
Concept of resonance
Role of stiffness, mass and damping in response
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