Module 7   :  Free Undamped Vibration of Single Degree of Freedom Systems; Determination of Natural
                       Frequency ; Equivalent Inertia and Stiffness; Energy Method; Phase Plane Representation.
Lecture 2 : Determination of Natural Frequency
Objectives
    In this lecture you will learn the following
Solution of equqtion of motion for undamped-single degree of freedom system.
Concept of natural frequency.
Translational and torsional spring mass systems.
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