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Message ID: 1967     Entry time: Thu Jul 9 14:35:30 2015
Author: Alessandra 
Type: Misc 
Category: Seismometer 
Subject: Inverted pendolum 

I estimated what the inverted pendulum leg's spring constant (K) should be using some realistic/desired parameters.

Me and Kate assumed the inverted pendolum made of a cylindrical steel leg of radius 0.5 cm and lenght 0.42 m, and a point mass of 1 kg. With a resonant frequency of 40 mHz we obtain:

K\simeq {4.1 \frac{N}{m}}

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