#JavaScript version
http://iwant2study.org/ospsg/index.php/interactive-resources/physics/02-newtonian-mechanics/09-oscillations/89-shm045
[img]http://iwant2study.org/lookangejss/02_newtonianmechanics_8oscillations/ejss_model_SHM045/SHMcircle/circularSHM2014-02-24_1610small.png[/img]