Paglalarawan Double Pendulum Simulator

About
An open source physics at Singapore simulation based on codes written by Dieter Roess, Francisco Esquembre, Félix Jesús Garcia Clemente and Loo Kang WEE.
more resources can be found here
http://iwant2study.org/ospsg/index.php/interactive-resources/physics/02-newtonian-mechanics/02-dynamics
Interesting Fact
This app is produce real numbers to coincident with the real world data.
Acknowledgement
My sincere gratitude for the tireless contributions of Francisco Esquembre, Fu-Kwun Hwang, Wolfgang Christian, Félix Jesús Garcia Clemente, Anne Cox, Andrew Duffy, Todd Timberlake and many more in the Open Source Physics community. I have designed much of the above based on their ideas and insights.
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FaceBook Fan Page:
https://www.facebook.com/Open-Source-Physics-Easy-Java-Simulation-Tracker-132622246810575/
Twitter:
https://twitter.com/lookang
YouTube:
https://www.youtube.com/user/lookang/videos
Blog:
http://weelookang.blogspot.sg/
Digital Library:
http://iwant2study.org/ospsg/