Catapults Research Paper

To fire it, the spoke or arm was forced down, against the tension of twisted ropes or other springs, by a windlass, and then suddenly released. As the sling swung outwards, one end would release, as with a staff-sling, and the projectile would be hurled forward. The arm would then be caught by a padded beam or bed, when it could be winched back again. The Onager is usually the first type of catapult

The way a Trebuchet works is that a counter weight drops which pulls the arm forward and at the point of takeoff a pin releases the object that is being projected. The counterweight drops using gravity and is attached to the arm causing it to fly up and launch the object. Engineers have had previous experience in this field because of the world wide trebuchet launching competitions. One example of engineers making this trebuchet are the engineers from team NASAW in the Pumpkin Chunkin ' competition. Team NASAW has a trebuchet with a heavy weight and a long arm. There arm and weight start next to each other at the beginning. The weight drops forward and like a whip the arm swings around and fires the pumpkin into the air at insane speeds. They are one of the top competitors in the competition and have proven countless times that the design works wonderfully.

Before even beginning to measure the ping pong ball’s “journey”, we had to create our own catapult. Using materials provided by Ms. Csigi, such as popsicle sticks, hot glue, rubber bands, and a spoon, we created the our own, unique catapult. First off, we created a square with four popsicle overlapping each other. Then we created another square and connected the two by the edge, with one side upwards. Then we got a spoon and glued it on another popsicle stick. Because the spoon needed to be at an angle, we hot glued the bottom facing the bottom of the square. We connected rubber bands to the spoon so that once we pull the spoon to ground zero, the

Objective: Using a marble launcher, launch marbles from different angles with different forces to find the maximum height and the velocity as it leaves the launcher. Using different variables and results to determine how the different angles and amounts of force effect the variables. With this data show the effect the forces cause in 1-D and 2-D motion, as well as in the X and Y directions. This is done through kinematic equations and calculations.

The catapult is a machine that launches an object into the air by using sudden tension. When people launched catapults, the object that was launched forms a parabola to hit the target otherwise known as a projectile. There are forces that act upon the object such as gravity and initial velocity. To calculate where the object lands, people use the vertex form and the quadratic formula. The vertex form is y = a(x – h)2 + k in which a is equal to the slope of the parabola, h is equal to half of the x value and k is equal to the y value of the maximum point. Also, people can find the farthest distance where an object could land by using the quadratic formula. Therefore, vertex form and quadratic formula are used to determine the path of the catapult’s

Trebuchets are most commonly known as medieval weapons used in the Middle Ages. Us three were to build a smaller scale of the trebuchet and had to make sure it hit the target two out of the five times. We had to build a hinged-counter weight type of trebuchet with wheels that could throw a ping pong or golf ball. Through the paper I will explain the history throughout trebuchets and why to have wheels and to have a hinged counter weight on the trebuchet. Also the calculations on the potential energy and velocity are through this report. Our trebuchet met all of the requirements that were to be made and it hit the target three out of the five times. This report will

The trebuchet doesn’t date back to a specific person, or date. However it is seen as early as the 6th century. In the 6th century, China used a trebuchet-like idea of humans pulling ropes on one end to catapult an object on the other end. The known trebuchet design was created somewhere during the 12th period, and once created it was seen everywhere. The trebuchet was built during this medieval time period because it was extremely difficult to get over castle walls, or to break through. The purpose of the trebuchet initially was to do this. There are four basic parts to the trebuchet: the frame, the guide chute, the beam sling, and the counterweight. The trebuchet was created in a crucial time period because of its purpose. It succeeded greatly

In light of our final exam, the chuck a duck project, we are to learn about projectiles, trajectory, and the factors that affect these things.

Ever thought about that one wall that you wished was never there well know you can with this easy weapon called a trebuchet is it cheap and easy to put together, it is not very dangerous so don't let your parents tell you what it is and isn't take up your trebuchet that you built and take control

Calculations were performed to determine the effectiveness of the design of the platform. Allowing for a safety factor of 1.5 times the design weight of 10kg and considering the bridge must not be overdesigned; plans were made for the bridge to fail at 25kg, 2.5 times that of the design weight. According to the calculations, the bridge would hold a load of over 15kg and experience failure at 20kg in the members. These calculations were later disproven in the testing, breaking 8kg earlier than expected, due to unforseen errors. An analysis of the bridge design and calculations has been included at the end of this report.

The other being the Trebuchet or commonly known as catapult. The Trebuchet was an effective weapon to break through enemy lines, but it lacked speed of reloading, and simplicity of manufacturing. The Longbow was a six foot bow or the equivalent length of a human. The Longbow was made to increase the draw weight compared to the regular bow. Not just the combat that made the Longbow more effective but the simplicity of the bow and arrow. “The bow was an easily produced weapon needing wood string and some arrows” and combat of the bow was already present (Neumann). Using the Longbow was a weapon with no excessive movement and the archers can be kept at farther distances away from the close-fighting. All the bowman had to do was draw the string and fire the projectile. With that the Longbow had advantages over other weapons. Close-range weapons such as the ax, can be effective in some cases like fast-speed weapon and durable but it risks higher deaths than the bowman. In combat the close-range weapons were still important which kept the archers firing into opposing force without retreating. The Crossbow was also effective if not the same as the Longbow. Being a bow and a rifle it can “act as a mid-range weapon”, and does not need to be protected as much as Longbowman (DeVries). Although it takes longer to load compared to the Longbow, it can have more power than the Longbow and having the only rifle-like weapon of its time it can be more accurate than the Longbow. The bow was a “Short bow mounted perpendicular to its base” (Sider). It took the part from holding string and pointing weapon and split it so they do not have to do both at the same time (English). There were a couples versions of the Crossbow like the commonly known one is the classic pull string on trigger and direct to shoot. Like the Trebuchet it can be loaded and then fired with no stress of the

Another toy today that could use rocks to kill something or someone was the slingshot, or also known as a catapult, shanghai, or katty. The idea of the slingshot is believed to have originally come from a weapon called a sling. The origin of the sling is unknown, but people believe that it was invented during the Upper Paleolithic era, it was used to fight in wars and for hunting. The sling was almost like a yo-yo, where you would have a heavy object, usually a rock, on one end of a cord; the person using the cord would hold the other end and whip around the weapon to hit someone with the rock.

the arm on the catapult. My independant variables are the items and their different weights

When we think of catapults we usually imagine them firing at castle walls during the medieval times, or standing in the background of a large army clashing with another in an action movie. However, catapults have a long and intricate history that twists and binds with our own, dating all the way back to 399 B.C. First documented by the Greek historian, Diodorus Siculus, in the form of an early design for the Ballista (type of catapult). Catapults were a staple for siege warfare all throughout history. The catapult was used by many different cultures, notably the Greeks, Roman, and Chinese in siege warfare; also

There are different versions of the crossbow such as the Horton crossbow that is similar to those made in the middle ages.