Catapults and Trebuchets
Trebuchets have weights to counterbalance and drop to throw while catapults use elastic or arm bending to fire.
Different types of catapults
Trebuchet Project- The Derek Zoolander center for Kids Who Can't Read Good and Want to Learn to Do Other Stuff Good Too.
Projectile in motion
Ballista-Wood and elastic- for siege
Springald-compact version of ballista
Mangonel-has scoop, made of wood, for siege
Trebuchet- wood, counterweight, for siege and artillery
couillard- simplified trebuchet
Reflections
By; Sam Kemp, Kyle Hamilton, and Sean Floody
any object which, once projected, continues its motion by its own inertia and is influenced only by the downward force of gravity
Kyle- I learned how to make a trebuchet and how to set a sling and how they work. I found the launch the hardest part. My strengths would be with logic and basic ideas of physics and math and my weaknesses are working with powertools. The only connections I can think of for the trebuchet is medievel times but physics is in everything.
Sam- I learned more about carpentry and creating objects. The most difficult thing was tweaking the launch, we always over shot or under shot. My strengths were my knowledge of tools and my creative building style. My weakness was my impatience, I always wanted it to work faster. I think that I learned a great deal about trial and error. I figured out how to solve problems fast and get things done, and I connected this to how much people in medieval times must have had to work.
Video Launch
Kyle- We worked hard and diligently to get the project done and to do it right. I think overall we did very well and put a good amount of effort into the project.
Photo Log
Safety
11-11-2012
11
Analysis
Always wear protective headwear, eye-wear, and don't stand near the trebuchet when launching.
initial velocity of the release- 21.6 m/s
time to the highest point the total time-.8s, total- 1.6s
final velocity-18.75 m/s
range-35m
Roles and Responsibilities
Sean-assembly, launch help
Sam-assembly, materials, prezi
Kyle-Pictures, prezi, assembly
Brian-assembly