Introduction
Our group called “Kinder” has decided to estimate the drag coefficient on Kinder’s egg container which is quite similar to the cylinder. Particularly that cylinder is experiencing the flow over its flat face. Its drag coefficient is going to be measured in fluid of air wind. The airflow would be supplied by ordinary hair dryer. The velocity of air wind will be measured by the help of anemometer, which we would construct by ourselves with improvised materials such as plastic cups, pencil, pin and straws. Particularly the coefficient of drag is going to be measured by the hanging object on pendulum and directing the airflow to the flat face. The relevance of our shape is that it could be used in helicopter construction due to the similarity of basis of it. In addition, some bullets’ drag coefficient can be also calculated with the help of the container.
Literature
Some presumptions were included in academic sources upon which we relied. The theoretical coefficient of drag for a three-dimensional flat-faced circular cylinder was written to have a relation to the length to diameter. The length of the Kinder egg container is measured to be 3.5±0.1 cm, while the diameter is 1.7±0.1 cm. Therefore the length to diameter ratio is 2.05. Now referring to the graph of the l/d ratio relation to Cd the theoretical drag coefficient could be deduced. The approximate value varies between 0.8 and 0.9. However, it should be pointed out that the Kinder egg container is less of a cylinder as its edges are cut. Therefore, the theoretical drag coefficient is expected to approach the lowest value, i.e. 0.8.
Idea review
First, for any experiment the idea and the method of running are very important to plan. The first idea that our team came up with was the parachute. The idea was vetoed due to the fact that the same object (parachute) could not be repeated in another medium, thus it is not possible to get higher mark. Next, and the most frequently used idea, is the drag measurement on the free falling body in various types of mediums. The experiment was deemed simple, yet it was not obvious how to measure the time when the velocity comes to terminal. Or does it ever come? Then, the next idea was pendulum, as it is a simple machine and we instantly thought up the idea to use hair dryer, and intentionally to measure the velocity of the flow an anemometer was suggested.
To measure velocity we had to get an orange and let it flow down a
The Purpose of this lab is to use the impulse and momentum concepts to explain what happens when the eggs are dropped onto various objects.
The objective of the experiment was to discover the effect of mass and radius on the centripetal force of a system and determine the mass of a hanging object using the discovered properties. Centripetal force is the culmination of multiple forces that act on a spinning system. By attaching a known mass and changing the radius on between a center post and the unknown mass, the unknown mass can be calculated. Likewise, if the inverse is tested, with a variable known mass and fixed radius, the unknown mass can be calculated.
Planning Firstly here is a list of equipment I used. Boiling tubes Weighing scales Knife Paper towels 100% solution 0% solution (distilled water) measuring beakers potato chips Cork borer. We planned to start our experiment by doing some preliminary work. We planned to set up our experiment in the following way.
...distance, height, and most importantly, angles. The main thing I will be looking for in my experiment is how much angles play a role in goal scoring and where they come into play the most. Using all of the information I have found about how to kick, the proper distance away from the goal when kicking a foul shot, and the correct dimensions of the goal, I will conduct an experiment with results that are as close to a real soccer game as possible. I will not be using defenders that way I can get a better measurement of the angles I am kicking from.
Many people are amazed with the flight of an object, especially one the size of an airplane, but they do not realize how much physics plays a role in this amazing incident. There are many different ways in which physics aids the flight of an aircraft. In the following few paragraphs some of the many ways will be described so that you, the reader, will realize physics at work in the world of flight.
Introduction to Aerodynamics Aerodynamics is the study of the motion of fluids in the gas state and bodies in motion relative to the fluid/air. In other words, the study of aerodynamics is the study of fluid dynamics specifically relating to air or the gas state of matter. When an object travels through fluid/air there are two types of flow characteristics that happen, laminar and turbulent. Laminar flow is a smooth, steady flow over a smooth surface and it has little disturbance. Intuition would lead to the belief that this type of air flow would be desirable.
Also, to learn how to determine acceleration from experimental data. In this experiment, we built air balloon powered cars and measured how long they could roll and how fast they accelerated. We had to include many factors while building our cars. For example, air resistance, force, and friction. I designed my car using the idea that the lighter and smaller the car, the farther and faster it will go. My partner and I used many tests to see if the design worked. To test if the wheels work, we rolled it across the table and the car moved fast and rolled far. This meant the wheels were working. Once we got the balloon on, we tested it multiple times to see if it would reach the two meter mark. Our car in the class test was ok. Our time was fast and the car accelerated quickly. It gained speed at the end. Our distance was not too far past the 2 meter line. Our velocity also was not the fastest. If I did this lab over, I would have made the body of the car smaller because it would have made the car’s velocity go faster. Also, I should have used CDs for wheels instead of cardboard because then the car would have rolled faster. An error in this lab was that our car’s wheels were not in place so they slid around in the straw socket. This made the wheels catch on the side of the car and made the car slow
As the boomerang spins, the airfoils at its perimeter create lift. Our text, Physics: A World View, discusses aerodynamics and Bernoulli’s principle. It explains the relationship between the velocity of a fluid and the pressure that the fluid exerts. A fluid gains energy when it speeds up as, for example when it goes through a constricting area in a pipe or passes around an airfoil. Since the gravitational potential energy is constant, the change is in kinetic energy. Since there is an acceleration of the fluid, the press...
To investigate the affect the material of a ball has on the bounce height of that ball where the drop height (gravitational potential energy), temperature, location, ball, and air pressure of the ball are kept constant.
The aerodynamic efficiency is the single most important element in designing a competitive car for professional racing or getting the car model on the front of a Car and Driver or Motortrend. Aerodynamics is the study of the motion of gases on objects and the forces created by this motion. The Bernoulli effect is one of the most important behind car design. The Bernoulli Effect states that the pressure of a fluid, in gaseous or liquid state, varies inversely with speed or velocity and a slower moving fluid will exert more pressure on and object than the same fluid moving slower (Yager). The goal of car designers is to make the air passing under a car move faster than the air passing over the car. This causes the air passing over the car to create more downforce than the air passing under the car creates upforce creating a force additional to the car’s weight pushing the car to the road. Large amounts of downforce are needed to keep light cars grounded at high speed and keep to cars from sliding around turns at high speeds.
Planning and Method. Any experiment needs variations as well as fairness to be a true success. The two variations I will include in this experiment shall be: 1) The number of paperclips on the bottom of the helicopter. 2)
Ties and hair should be tucked out of the way, so they do not make contact with any of the chemicals. It would also be preferable to wear a scientific apron, however this is not essential. We should also try our best not to spill any chemicals, and we must not eat or drink in the lab while dealing with these harmful chemicals, as they can get on our hands. Fair Test To make this experiment a fair test, we need to make sure we do a number of things. In this experiment we are trying to find the rate of reaction using concentration as a factor, so there are a number of things we need to make sure we do to keep it a fair test.
Projectile motion is used in our daily lives, from war, to the path of the water in the water fountain, to sports. When using a water fountain or hose, projectile motion can be used to describe the path and motion of the water. This technology was created by finding the angle at which the water would come out at a maximum height and the person using it would be able to drink it without leaning over too much. These types of projectile motion will be further explored and analyzed in this assessment.