View source for Mechanical springs and spring-dampers

[[File:SD1.png|thumb|Image reproduced from [http://maxpixel.freegreatpicture.com/Damper-Graphic-Design-Wallpaper-Spring-Yellow-2118130 here]]]
* '''Natural Frequency range:''' 3 -9 Hz
* '''Pros:'''
** Easily available and can be designed with required specifications (stiffness, strength) 
** Low Cost
* '''Cons:'''
* Spring have very low internal damping 0.5%
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