Ejs open source simple harmonic applet SHM for inquiry learning virtual lab updated April 2010 with slightly better GUI and color scheme.
google tag " simple hamonic motion simulation "
spring mass easy java simulation on simple harmonic physics applet with options for pre university A level physics made by lookang.

remixed From an EJS manual example from D:\EasyJavaSimulation\Ejs3.46_070428\Ejs\Simulations\_examples\Manual\Spring.xml and D:\EasyJavaSimulation\Ejs3.46_070428\Ejs\Simulations\_examples\Manual\SpringAdvanced.xml by Author : Francisco Esquembre
follow the tutorial on spring mass system allows this virtual lab to be created by lookang.
Thanks to Francisco Esquembre, Fu-Kwun Hwang and Wolfgang Christian for their guidance.
many options: simple harmonic motion forced oscillation of course, another best java physics applet, by teacher for teachers.
creative commons attribute! http://creativecommons.org/licenses/by-sa/3.0/sg/
older versions
http://66.7.205.91/~lookangc/_apps/_examples/weelookangspring05.app/weelookangspring05_Simulation.html

/htdocs/ntnujava/ejsuser/14019/users/sgeducation/lookang/SHM_pkg/SHM.propertiesFull screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
Download EJS jar file(1445.2kB):double click downloaded file to run it. (212 times by 61 users) , Download EJS source (58 times by 25 users) View EJS source