1. The Trebuchet By: BETSY CONGDON

2. Origins China -5th to 3rd century BC -Traction Trebuchet Arab influence -Counterweight -Influence in expansion Pictures: L to R Cairo, Experimental, Experimental

3. In Europe Reached in approximately 500AD Origin of the name Engineer Origin of the word Trebuchet Scale Well Picture: T to B Grey, Castellan

4. An Adaptation of the Past Catapult Comparison Traction-Hybrid- Counterweight The Mechanical Improvements Sling Length Picture: Grey

5. History of Reconstruction Napoleon III No surviving Trebuchets Modern knowledge based on texts and reconstructions Arab resources Pictures: L to R Arabesque, Experimental

6. Trebuchets Pictures: L to R Castlewales, RP Gamer, NFO, GW Warmaster

7. Power! Human v. Gravity Distances The Counterweight Pictures: Grey, Grey

8. How Did it Work? Objects Thrown Long turn over time Balances: -Counterweight -Projectile Weight -Throwing arm length -Angle of release Picture: David

9. Stages of Motion Loading Setting Counterweight Release Trigger Release of Object Rocking Motion Reset Picture: Trebuchet

10. Parts of a Trebuchet “If a sling is made very much too short-roughly half of its proper length-the rock will go straight up. If this should occur the correct response is to run away very fast.”- Tom Bullock Beam Frame Sling Counterweight Trigger

11. Cannon Kills Trebuchet Hernan Cortes- 1521 Picture: Colonial

12. Other Resources My Personal Page Make your own Trebuchet Trebuchet T-Shirts Scientific American Article And More Links!

13. Sources “Trebuchet.” www.wikipedia.org. A wikimedia project. http://en.wikipedia.org/wiki/Trebuchet. Jan 22, 2005www.wikipedia.orghttp://en.wikipedia.org/wiki/Trebuchet “Experimental Rconstruction of a Medieval Trebuchet.” The Medieval Centre Siege Engines. Dr. Peter Vemming Hansen. 1992. www.Middelaldercentret.dk/acta.html “Medieval Siege.” Nova Online. PBS. January 2000. www.pbs.org/wgbh/nova/lostempires/trebuchet. www.pbs.org/wgbh/nova/lostempires/trebuchet “Trebuchet:Some Experiments with Trebuchets.” Tom Bullock. January 22, 2005. www.tbullock.com/trebuchet.html www.tbullock.com/trebuchet.html The Grey Company Trebuchet Page. The Grey Company. April 2004. http://members.iinet.net.au/~rmine/bctrebs.html http://members.iinet.net.au/~rmine/bctrebs.html “The Trebuchet.” Scientific American Magazine. Scientific American Online Archives. July 1995. www.sciamarchive.org

14. Pictures www.2md.dk/gw-warmaster/images/engines_of_war_and_seige/ www.bamsoftware.com/trebuchet www.college.emory.edu/culpepper/Bakewell/period.hml www.leidenuniv.nl/fsw/band/sinai/culture/CairoCitadel/cairocitadel.html www.fordham.edu/history/smail/1300/images_and _texts/06-Trebuchet.htm www.shjmuseum.gov.ae/museums/islamic/islam_arab.htm www.physics.sfasu.edu/astro/courses.egrill.html www.castlewales.com/trebuchet.html www.rpgamer.com/games/other/pc/sbane/sbaneart.html http://Nfo.edu/trebuche.htm