The TREB Challenge Is On -Take Your Best Shot!
Think your physics expertise is second to none? GlobalSpec® offers you a chance to prove it!
By challenging you to
 Build your own trebuchet (just click here),
 Test your skills for distance, accuracy and power,
 See how your siege engine stacks up against the competition.
Don’t worry, there’s no limit on how many times you can play - or how long it should take you to make the High Score Board!
GlobalSpec is a specialized vertical search engine serving the engineering, manufacturing and related scientific and technical communities.