How do I troubleshoot a simulation not loading in my web browser?

[teggenspiller]

Buoyancy.. can someone help me!?

Homework Statement

im doing an online physics intro class. and for the buoyancy chapter i have to open this .jar file and then explain what happens to the hot air balloon, what factors are affecting it floating, etc. Clcik here to launch the simulation.

http://jcpseschool.jefferson.k12.ky...f-e80e-4d7a-b8b4-7d62a7885655&permalinkType=0

but i can't view it with my computer for some reason. and so i was going to ask you guys what the heck is happening in the similuation so i can move on in the class (which i have 17days left to finish by the way) .

Homework Equations

??ahhhh

The Attempt at a Solution

 

[Clever-Name]

Session Timeout
Your session has expired due to an extended period of inactivity. You will need to reauthenticate to access the requested information.
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That's what I get when I try to load it.

What web browser are you using?