EJSS Gravitational Force Model

EJSS Gravitational Force Model recreated by lookang using the codes here http://weelookang.blogspot.sg/2013/09/coulomb-force-model-by-anne-cox.html

http://weelookang.blogspot.sg/2015/02/ejss-gravitational-force-model.html
model added for F = -1/r^2 for right side 
run: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_gfield/gfield_Simulation.xhtml
offline: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_gfield.zip
scr: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_src_gfield.zip
author: lookang, anne cox, Francisco Esquembre, Wolfgang Christian
author EJSS 5.0: Francisco Esquembre

http://weelookang.blogspot.sg/2015/02/ejss-gravitational-force-model.html
 model added for F = 1/r^2 for left side
run: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_gfield/gfield_Simulation.xhtml
offline: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_gfield.zip
scr: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_src_gfield.zip
author: lookang, anne cox, Francisco Esquembre, Wolfgang Christian 
author EJSS 5.0: Francisco Esquembre