http://weelookang.blogspot.sg/2014/11/ejss-primary-school-pendulum-energy.html MODEL standalone: https://www.dropbox.com/s/20lc16lg3i2z25a/ejss_model_SHMxvapendulumpri.zip?dl=0 run: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_SHMxvapendulumpri/SHMxvapendulumpri_Simulation.xhtml source: https://www.dropbox.com/s/675lfmdwur52m7p/ejss_src_SHMxvapendulumpri.zip?dl=0 author: lookang, anne cox author of EJSS 5.0 Francisco Esquembre |

## reference:

- http://weelookang.blogspot.sg/2014/02/ejss-pendulum-model.html
- http://academics.eckerd.edu/physics/EJS/Physical_Sci/Energy/ejss_model_pendulum_energy.zip by Anne Cox.

## The equations that model the motion of the pendulum system are:

where the terms

## Energy Equations:

this model uses