Module 8 : Free Vibration with Viscous Damping; Critical Damping and Aperiodic
                      Motion; Logarithmic Decrement; Systems with Coulomb Damping.
Lecture 3 : Logarithmic Decrement
 
Recap
  In this lecture you have learnt the following
Concept of logarithmic decrement and its application as a tool to determine the system damping
Derivation of formula for lograthmic decrement
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