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comparing and contrasting

Rotate on axle with a large beam.powered by counter weight on one end of arm

Catapult i would like to build

sources

They all are used to throw or sling obejects and they are all catalpults which was built along time ago during b.c time.

poor accuracy with higher velocity used to fire missels which was use to knock down castle walls

http://www.real-world-physics-problems.com/catapult-physics.html

http//:catapults.info/

Two armed torsion device flexible and power bow. used to hurl stones

The catapult i would like to build is the mangonel because it seems more experiencing than the others. I also would like to build this one because the mechanism is more direct. It also consists of either a tension device or a torsion device which is directly connected to the arm ,which is a very perfect catapult to build.

http://www.lordsandladies.org/mangonel.htm

Ballista catapult

This is a two-armed torsion device invented by the Greeks. It works similar to a crossbow, but instead of a flexible bow, it uses two stiff arms powered by twisted rope skeins like an Onager. The ballista predates the Onager by several centuries and was used to hurl stones (lithobolos style ballista) and also bolts or darts.

Mangonel Catapult

The Mangonel was an invaluable Medieval siege attack weapon, similar to a catapult which worked by using torsion or counterpoise. Mangonels fired heavy projectiles from a bowl-shaped bucket at the end of its arm. The Mangonel was used for aiming various missiles at castles, fortresses and cities. This type of catapult was easy to construct and wheels were added to the design to ensure manoeuvrability. The Mangonel complimented the other available siege weapons. The Mangonel was not as accurate as the Ballista but it was able to throw missiles further than a Trebuchet. Missiles were thrown in an overhead arc as opposed to the straight trajectory of the dart throwing Ballista.

Trebutchet Catapult

The word "Trebuchet" is from French, and meant something like "to fall over or rotate about the middle" as in a see-saw rotating on its axle. It also seems to have meant a big, heavy beam. Today a Trebuchet is any kind of catapult that is powered by a massive counterweight on one end of an arm, and a sling on the other end. This includes Perriers, or "traction" trebuchets which are powered by a mass of people pulling one end of the arm with ropes.

3 MAJOR TYPES OF CATAPULTS

BY:Kendrecus Weldon

Period:2

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