Physics of Boomerangs

twisting plant fiber plants together and scoops were made out of woven reeds.They got the cord from plant stems. They use these tools to hunt for fish. Their clubs were only used for hunting and warfare and were made with wood, rope, and stone. Swords were made out of stone, rope, and silk. Bolas were made for hunting they were made out of ropes and weighted end swung around and launched their enemy. Their shields were round. They used blowguns to hunt birds and they were poisonous and were made out of mud, poison, and silk. Helmets were made out of wooden plates and

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.

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.

“Ok, the fact this worked at all is a miracle at all to some people who prove that you should try stuff even if you think you know the outcome. So lets sum it up, you can control forwards backward with your weight distribution (it’s not fighter jet responses but works).

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

There are 3 Laws of Motion developed by Isaac Newton in 1687, in his book “Mathematics Principles of National Philosophy”(Hall,Nancy).Newtons first law of motion says that an object will stay at rest until a external force is applied. Also know as inertia(Hall, Nancy). Gravity affects it buy pulling the counter weight down which pulls the the opposite side which has the sling and projectile up launching the projectile(Saimre tanol). For gravity to be most effective the counter weight must be at least five times heavier than projectile(Saimre tanol). Centripetal force is a big factor in calculating trebuchet factors. the definition of centripetal force is a force that acts inwards on any object that rotates or moves along a curved path and is directed toward a center point(Centripetal force). In this case centripetal force is good. when the projectile is released centripetal force pulls it inwards which makes it go farther and be more accurate with out centripetal force the projectile would go straight up or straight down(Centripetal

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.

Introduction: The experiment being tested is worth conducting as it can help people decide which ball to get if they want a bouncy one, either it is expensive, cheap, big or small. One fact on balls is that they are different and they bounce differently and are used differently. A netball has thinner layers than what a basketball does, and a basketball is more used for bouncing that a netball.

Our Rube Goldberg machine starts with a ball at the top of a ramp with gravitational potential energy. As it rolls down the ramp, its gravitational potential energy turns into kinetic energy. Once the ball gets to the bottom of the ramp, the ball has no gravitational potential energy only kinetic energy. The ball continues to roll because it has momentum until it hits a domino line. The ball transfers its momentum to the

The solid ball was typically used against forts and other artillery pieces. The grape shot and canister shot were utilized as anti-personnel munitions. The Garrison Cannon used three different types of shells; hot shot, chain shot and bar shot. Hot shots were cannonballs that were heated until they were glowing red and then fired at ships to set them ablaze. Chain shot and bar shot consisted of two cannon balls connected by either a chain or bar. They were designed to destroy ships rigging. The mortar used only one type of shell, the bomb. The bomb was a hollow shell that was filled with black powder and had a fuse. The howitzer utilized hollow shot and anti-personnel munitions.

The final stage of our Rube Goldberg was the balloon popping. That was caused from the dominoes hitting bigger objects in the chain and the last object had a pin attached which popped the balloon which made elastic potential energy and also sound energy take place. The elastic potential energy took place as there was a balloon and balloons are made from rubber, latex, or a nylon fabric. Which when balloons pop cause a reaction which not only produces elastic potential energy but also sound energy from the popping

Our egg drop was designed with many strategies in mind. One of them was to build our design with as many triangles as possible due to the triangle being the strongest geometric shape due to their ability to distribute force evenly to all three sides. This would spread the force off the impact on the floor throughout the structure making it when it fell no one point would get the full blow of the impact. Another tactic used when building our structure was trying to make it symmetrical. So that if it rolled while falling there would be no weak points for the structure to fall onto. Another tactic used when building the design was building out around the egg so that when dropped the structure would bounce and the force

The purpose of this experiment was to determine if rubber bands or bungee cord would put more force into the launch of the catapult. The experiment was designed to test the hypothesis if either a bungee cord or rubber bands would help an eraser to launch further, because of more force.

The physics concepts associated with them are projectile motion, energy, momentum, forces , speeds, and distances. The kinds of catapults all use the same theme of accumulated tension, but acquire that tension in their own way, their own design. The Mangonel catapult for instance, is what most of us think of as the traditional catapult. A large wooden device with four wheels and a spoon that launches fireballs. The Mangonel stores energy much like a spring would, therefore, we use the equation PEspring = 1/2kx^2. The tension in the ropes and arms of the catapult when pulling on its long arm stores potential energy which is transformed into kinetic energy when fired upon.

* The relevance of this experiment is similar to understanding a real airplane. Paper airplane models are derived from an actual plane these days. The design of an airplane has so much to do with distance, hang time, speed, and many other factors. Understanding the models I have chosen to make help me