The following is an EJS version of the above applet (with more options)

You can drag the spring, particle and the rod with mouse click/drag.
You can change spring constant k, mass m , spring length L, and damping constant b.
Enjoy it!

/htdocs/ntnujava/ejsuser/2/users/ntnu/fkh/pendulumspringHline_pkg/pendulumspringHline.propertiesFull screen applet or Problem viewing java?Add 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(1276.5kB):double click downloaded file to run it. (3 times by 3 users) , Download EJS source (1 times by 1 users) View EJS source