After delete  from plotting panel.
To load applet click eye image [eye]

/htdocs/ntnujava/ejsuser/37048/users/br/ahmed/users_br_ahmed_PhysicalPendulumEnergy_pkg/users_br_ahmed_PhysicalPendulumEnergy.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(1447.1kB):double click downloaded file to run it. (3 times by 2 users) , Download EJS source View EJS source
[/eye]