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Catapult Project Algebra Two Jordan McDaniel, Ellie Trotter, & Kiersten Gross

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Kiersten Gross

on 6 December 2012

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Transcript of Catapult Project Algebra Two Jordan McDaniel, Ellie Trotter, & Kiersten Gross

By Kiersten Gross, Ellie Trotter, and Jordan McDaniel Catapult Project
Algebra II The oldest catapult Trebuchet Catapult Mangenel When? Ballista When? Our Catapult When? 1191 B.C. How does it work? •The counter weight rotates the beam which pulls the sling
•The guide chute guides the sling through the frame
•The sling continues to arch until the loop slips off the release pin and the projectile is released 400BC Invented by the Romans! •Bowl shaped bucket at the end
•Rope acted as a spring when attached to the arm
•Ropes were made from twisted human hair and animal sinew
•Rope at the bottom of the throwing arm was twisted
•Wheels were added later on How did it work? Menu Mangenel Trebuchet Ballista 400 B.C. It is said to be made by the greeks. How does it work? -Arm pulls back
-Rope twists creating tension
-Used in closer range Description:
The first thing we did was make a wooden base. We then drilled a hole through the middle of the base. We attached two large pieces of wood on the sides, vertically. A smaller piece of wood was placed between the larger pieces of wood. PVC pipe was added to the hole in the middle of the base. Another piece of PVC pipe was then attached to make a rotating arm. A PVC pipe shoulder and funnel were screwed onto the end of the pipe. Two hooks were added to the two large pieces of wood, which were used to hold the tension of the surgical tubing that was wrapped around the middle piece of wood. We tested this piece on different heights to see which angle sent the tennis ball the furthest. Dimensions: 23.5 in x 12in x 18in Weight: 4.75 lbs. Our Catapult The Path of Our Catapult The Path of our Catapult Cost of Items 1. Screws/Nuts/Bolts-$2.30
2. Funnel-$3.00
3. PVC-$5.00
4. Wood-$4.00
5. Surgical Tubing-$5.50
Total: $19.50 Cost of Items Work Cited http://www.trebuchet.com/ http://www.medieval-castle-siege-weapons.com/ballista.html http://www.medieval-castle-siege-weapons.com/ballista-catapults.html http://www.mangonel.com/10901 Vertex: approximately (40,11) Work Cited
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