09- Quantification de la manip "pendule non harmonique"

[DagnyT]

record period as a function of amplitude

compare with a simulation similar to
http://www.sciences.univ-nantes.fr/sites/genevieve_tulloue/Meca/Oscillateurs/pend_pesant1.php

and / or
http://www.sciences.univ-nantes.fr/sites/genevieve_tulloue/Meca/Oscillateurs/periode_pendule.php