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How is physics used in aircrafts
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My topic for the science fair is “ Which falling objects fall the fastest? “. Many factors affect the speed of aerodynamics such as the different forces on the object. The aerodynamics of the object and the physics surrounding the object. Great scientists have studied falling objects such as Galileo Galilei and Sir Isaac Newton. I will discuss their lives, experiments and scientific findings.
Aerodynamics is the study of force on an object. It has been called the science of flight. Aerodynamics consists of two Greek words. Aerios means “ concerning the air “, while dynamis means “ powerful “. The wind duct is the basic experimental tool in the studies of dynamics. The three main forces used in aerodynamics are the lifting force, the drag force, and the weight force. Aerodynamics is technically the science that was used to develop flying machines, such as helicopters, airplanes, jets, and rockets. Aerodynamics principles are primarily concerning flight. However, aerodynamics principles are used in designing automobiles and train bodies. Since aerodynamics also studies gases in the air, aerodynamics help determine frictional events in gas ducts and it also helps chart the flows of the pollutants in the air. It has been found that people have been interested in aerodynamics for thousands of years. Aerodynamics not only involves the motion of the object(s), but also the reaction of air to the object. When aerodynamics has plenty of rolling components, you then will see friction. Friction is a force that resists the relative motion or tendency to such motion of two bodies in contact.
Physics is the study of matter and energy and their reactions. The word physics comes from four main languages. Although strange, these four languages all pronounce physics the same way or they are very close. These four languages are Old French, Greek, Latin, and Middle English. Middle English is the English language from 1100 to 1500. Isaac Newton was the person who experimented with many areas of physics, but it was Galileo Galilei who discovered that all items fall at the same speed without air. Newton discovered that forces do not cause motion; they cause acceleration. Newton also discovered that a force is not needed to keep an object in motion. Newton conducted several experiments. His most famous experiment happened in his backyard. He was sitting under an apple tree re...
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... car will not hit a terminal velocity. Thus, it will hit the ground first. But, there is only air resistance inside of atmospheres. In plain space, there is no air resistance. If you jumped, you would float up, up, and away. People spend their lives trying to figure out more about air and air resistance. There was tons of stuff on Google, trust me! These people found out that the thickness of the air changes the amount of air resistance there is. Drag force, which is the force that tries to drag you up, is weaker than gravity. The drag force plays a crucial role in all speed-related sports. The drag force is the most important factor in swimming. The drag force affects vertical motion too. The drag force affects skydivers with parachutes. The wind fills the parachutes and slows the skydivers down.
In conclusion, there are many types of forces that are used in free falling such as, air resistance, gravity, terminal velocity, the drag force, and other frictional forces. There is so much information on free falling and I have barely made a dent in it. If you would like to find out more information about air resistance, free falling, or any other forces, just check my bibliography.
Ever since I was little I was amazed at the ability for a machine to fly. I have always wanted to explore ideas of flight and be able to actually fly. I think I may have found my childhood fantasy in the world of aeronautical engineering. The object of my paper is to give me more insight on my future career as an aeronautical engineer. This paper was also to give me ideas of the physics of flight and be to apply those physics of flight to compete in a high school competition.
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.
Isaac Newton’s story of how an apple falling from a tree that hit his head inspired him to formulate a theory of gravitation is one that all school children grow up hearing about. Newton is arguably one of the most influential scientific minds in human history. He has published books such as Arithmetica Universalis, The Chronology of Ancient Kingdoms, Methods of Fluxions, Opticks, the Queries, and most famously, Philosophiæ Naturalis Principia MathematicaHe formulated the three laws of gravitation, discovered the generalized binomial theorem, developed infinitesimal calculus (sharing credit with Gottfried Wilhelm Von Leibniz, who developed the theory independently), and worked extensively on optics and refraction of light. Newton changed the way that people look at the world they live in and how the universe works.
The main focus in building and designing a successful race car is making it aerodynamically efficient. However, at the same time, the car must be versatile, durable, safe, and most important, fast. The challenge for the design team is to create car that can race on any type of track, weather it be on tight corners or long straight-aways. The aerodynamics of the race car is multi-functional. The first purpose is to make it as streamline as possible. The second purpose is to provide downforce for the race vehicle. The last reason is to control the airflow over the car’s body.
An object that is falling through the atmosphere is subjected to two external forces. The first force is the gravitational force, expressed as the weight of the object. The weight equation which is weight (W) = mass (M) x gravitational acceleration (A) which is 9.8 meters per square second on the surface of the earth. The gravitational acceleration decreases with the square of the distance from the center of the earth. If the object were falling in a vacuum, this would be the only force acting on the object. But in the atmosphere, the motion of a falling object is opposed by the air resistance or drag. The drag equation tells us that drag is equal to a coefficient times one half the air density (R) times the velocity (V) squared times a reference area on which the drag coefficient is based.
It was human kind ultimate dream to defy gravity and to be able to fly freely in the skies like a bird. Because of that dream, as early as 400 BC, humans had been experimenting with the idea of flying when a Greek scholar built a wooden pigeon that flew through the air. many after him had tried to fulfill that dream but failed , some of them succeeded but failed to sustain the flight , some even succeeded in sustaining the flight but failed due to unforeseen circumstances as their flying machines failed to live up to its expectation . One of the prime example was the zeppelin which was also known as a dirigible airship , The first zeppelin was invented , designed and constructed by Count Ferdinand Adolph Heinrich Von Zeppelin during the early 20th century (“THE ZEPPELIN” , ND)
Now To talk about the forces that allow the car to move. There are two main aerodynamic forces acting on any object moving through the air. Lift is a force that acts 90° to the direction of travel of an object. Usually we think of lift when we think of an airplane. The plane travels forward (horizontally), and lift acts 90° to that motion of travel –
Flight is one of the most important achievements of mankind. We owe this achievement to the invention of the airfoil and understanding the physics that allow it to lift enormous weights into the sky.
The application of force on an object causes an acceleration of that object. Yet, force is not the only factor in the movement, or acceleration of an object. The two main influences on the acceleration of an object are net force and mass. For example, net force is directly proportional to acceleration while mass is inversely proportional to acceleration. Other factors such as the friction, air or fluid resistance, and pressure effect the acceleration as well. All of these factors do not work against or in accordance with acceleration in the same way. Friction works in opposition to acceleration. Friction involves two objects that are in direct contact with on another but are moving in different directions. Involved with friction is air and fluid resistance. Fluid resistance, such as liquids or gases, focuses on when the object is moving in the opposite direction of a fluid flow or through a dense area of fluid. Air resistance involves movement through the air. The most noticeable effect of air resistance is when and object travels into a strong breeze or wind. And finally pressure, pressure refers to an applied force. With pressure you will find that the overall weight of and object doesn’t change no matter how you stand or lay it but you will feel more pressure from that same object depending on the force compared to the amount of surface area. The weight of the object
I have been skiing for about five years and I find it to be one of the most fun and challenging sports there is. A lot of the reason it is so challenging is because of the laws of physics such as gravity and friction. In this essay I will discuss how physics relates to skiing and how this physics makes skiing so fun and challenging. I will also discuss how things like wax and the shape and width of your skis can affect these laws of physics and enhance your skiing.
Lift is a commonly used term to describe "something" that results in objects moving upwards against the force caused by gravity. This "something" is actually a force in itself. Lift is one of the four main forces that act upon all objects that move through the air. These four forces are:
Flight uses four forces: lift, weight, thrust, and drag. In a nutshell; so to speak, an airplane must create enough lift to support its own weight. Secondly, the airplane must produce thrust to propel itself. Finally, the aircraft must overcome the drag or the force of resistance on the airplane that is moving through the air. All four of these forces are vital and necessary for an aircraft to move, takeoff, fly, and land.
Anderson, Margaret. Isaac Newton: The Greatest Scientist of All Time. Berkeley Heights, New Jersey: Enslow Publishers; Revised edition, 2008.
A free falling object is an object that is falling under the sole influence of gravity. Any object that is being acted upon only by the force of gravity is said to be in a state of free fall. There are two important motion characteristics that are true of free-falling objects:
Bosnor, Kevin. "How Flying Cars Will Work." Howstuffworks. How Stuff Works Inc., 1998. Web. 24 Jan.