Trebuchet help?

Question

I have been told to build a trebuchet with 2 other people for a science project. does anyone know a site where i can get a good, simple plan to work off of? thanks.

Answer 1

google makes the world go round, next time google it!  

http://www.ripcord.ws/plans/plans.html

Answer 2

http://www.trebuchet.com/ shows a basic example. All you need is a weight on one end of a pivot and a long pole with an attachment for what is to be thrown on the other and some way to wind it up.