Please any one help the following question?

http://www.geocities.com/nk7jaffna/a...esk/baloon.JPG

Come on, you know how this works by now.

What do you think happens? :)

You should first tell us what you think the balloon will do, and why. One thing to keep in mind is that there is air in the vehicle, and the air is denser than the helium in the balloon.