Preview
Preview

Physics of Lift Essay

No Works Cited
Length: 1433 words (4.1 double-spaced pages)
Rating: Purple      
Open Document
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

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:
# Lift - an upward force on the object
# Weight - a downward force due to the acceleration of gravity
# Thrust - a forward force (propulsion)
# Drag - a force caused by resistance that acts in the opposite direction of thrust

Lift is a simple concept to grasp, yet the reason it exists is a complex one. To this day there is still great debate over what is the cause of lift. There are several popular explanations given which are commonly found in student textbooks, and even pilot training manuals, yet these popular explanations do not stand up to serious physics analysis. The most common of these arguments is based off of Bernoulli’s Principle.

As it has been named, "Bernoulli’s" argument states that the reason lift is created in wings is that the upper surface of the wing is curved, and therefore longer than the underside of the wing (In truth, Bernoulli had nothing to do with this explanation of lift, it is only attributed to his principle). The argument goes on to say that if the upper surface is longer than that of the bottom, the air flowing over the upper surface must travel faster as it has farther to travel. Using Bernoulli’s Principle this explanation says that because the air traveling over the top of the wing is moving faster than the air under the wing the air above the wing exerts less pressure on the wing than the air under the wing. If there is less pressure above the wing then the air under the wing will push upwards on the...


... middle of paper ...


...del for lift, even though it works in reality.

In conclusion it can be seen that lift is derived from the fact that for there to exist a lifting force created in the wings the wings must exert a force on the air around them. The wings are able to do this due to the viscosity of air and the Coanda effect. By manipulating the wing's curves and angle of attack a pilot may preform great stunts and feats not possible if lift were to be explained through other incorect models.

More information about lift, as well as a very detailed explanation of exactly how a wing interacts with the air around it can be read in the journal article: "A unified viscous theory of lift and drag of 2-d thin airfoils and 3-d thin wings" author Yates, John, published by National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program in 1991.


Click the button above to view the complete essay, speech, term paper, or research paper








This essay is 100% guaranteed.


Title Length Color Rating  
Lift and the Physics of Flight Essay - Since the beginning of recorded history, humans have always had a fascination with flight. Now that we live in a world where boarding an airplane and flying across the country – or even the world - is simply a part of everyday life, the wonder of flight has diminished for many. Despite this, physics students from all around continue to delight in the many physical forces that play a part in keeping these huge objects (like jumbo jets) from falling out of the sky. The common explanation given to those curious about how an airplane wing produces lift uses the Bernoulli Principle....   [tags: physics lift plane airplane] 1123 words
(3.2 pages)
Good Essays [preview]
Essay on The Physics of Roller Coaster - i: Introduction You apprehensively walk up the iron steps and onto the platform. You’re reluctant to go any further, but your friend eggs you on, saying, “It’s not that fast.” You step into the seat and pull the harness down over you. No, this isn’t the latest, greatest technological frontier. It’s a roller coaster. Since 1804 when the first wheeled roller coaster- called “Les Montagnes Russes”- was constructed in Paris, France, roller coasters have been a staple of adventure and fantasy among children and children-at-heart....   [tags: Physics] 1556 words
(4.4 pages)
Powerful Essays [preview]
Essay about The Physics of Roller Coasters - A roller coaster is a thrill ride found in amusement and theme parks. Their history dates back to the 16th century. It all started in Russia, with long, steep wooden slides covered in ice. The idea then traveled to France. Since the warmer climate melted the ice, waxed slides were created instead, eventually adding wheels to the system. The first roller coaster in which the train was attached to the track was in France in 1817, the Russess a Belleville. The first attempt at a loop-the loop was also made in France in the 1850s....   [tags: Physics] 866 words
(2.5 pages)
Strong Essays [preview]
The Physics Related to Snowboarding Essay - The Physics Related to Snowboarding The last thing that is going through your mind when speeding down a mountain on a snowboard is all the physics involved with snowboarding, from the time you get on the chair lift, until the time you come to a rest at the bottom of the mountain. Now let’s take a look at all of the physics that are related to snowboarding. Gravity- is the force that keeps you on the ground. Without gravity snowboarding would not be the same. For example, if there were no gravity, when you hit a jump, there would not be a force to bring you back to the ground....   [tags: Physics Essays Papers]
:: 2 Works Cited
838 words
(2.4 pages)
Better Essays [preview]
The Physics of Human Strength Essay - Welcome to the Physics of Strength What make a person strong. According to Frederick Hatfield, Ph.D. and former world record holder in the Squat, there are 38 factors affecting strength. I have put them here for you to read quickly, but the original article can be found on www.drsquat.com. 1. Muscle Fiber Arrangement 2. Musculoskeletal Leverage 3. Tissue Leverage 4. Freedom of Movement Between Fibers 5. Tissue Viscoelasticity 6. Intramuscular/intracellular friction 7. Ratio of Fiber Types 8....   [tags: physics sport sports weight lifting strong] 2573 words
(7.4 pages)
Strong Essays [preview]
Applications of Physics For Different Industries Essay example - INTRODUCTION Physics attempts to describe the fundamental nature of the universe and how it works, always striving for the simplest explanations common to the most diverse behaviour. For example, physics explains why rainbows have colours, what keeps a satellite in orbit, and what atoms and nuclei are made of. The goal of physics is to explain as many things as possible using as few laws as possible, revealing nature's underlying simplicity and beauty. Physics has been applied in many industrial fields, which include the air industry, construction industry, automobile industry, manufacturing industry and many others....   [tags: Physics] 1954 words
(5.6 pages)
Powerful Essays [preview]
The Physics of Judo Essay - The Physics of Judo Judo is a martial art that is centered around physics. Even just the concept of throwing somebody is physics. To practice judo and not have a basic knowledge of physics is insane considering that physics is what makes judo possible. Judo is sport that consist of throws, take downs and over all control. Judo without physics is like have a sandwich with just bread, you don’t get much out of it. To understand how physics comes into play with judo we must start with Newton’s laws of motion....   [tags: Martial Arts Judo Physics Essays]
:: 4 Works Cited
934 words
(2.7 pages)
Better Essays [preview]
Physics of a Car Essay - Physics of a Car The average driver doesn’t think about what keeps their car moving or what keeps them on the road, but that’s because they don’t have to. The average driver doesn’t have to worry about having enough downforce to keep them on the road or if they will reach the adhesive limit of their car’s tires around a turn. These are the things are the car designers, professional drivers, racing pit crews, serious sports car owners, and physicist think about. Physics are an important part of every sports and racing car design....   [tags: Physics Car Driving machine Essays] 1540 words
(4.4 pages)
Powerful Essays [preview]
Physics of Swimming Essay - The study of physics and fluid dynamics in swimming has been a field of increasing interest for study in the past few decades among swimming coaches and enthusiasts. Despite the long history of research, the understanding of how to move the human body effectively through the water is still in its infancy. Competitive swimmers and their coaches of all levels are constantly striving for ways to improve their stroke technique and overall performance. The research and performances of today's swimmers are continuously disproving the beliefs of the past....   [tags: physics swim swimming] 1869 words
(5.3 pages)
Powerful Essays [preview]
Physics of Soccer Essay - Physics of the Ball How and where you kick the ball is the most important aspect within the game of soccer. Lets say you kick the ball perfectly giving it no rotation (or spin), this means that you have given the ball a velocity (v) and an initial angular speed of zero. When the ball comes into contact with the ground it will begin to spin because the ground is not frictionless. The soccer ball will eventually begin to roll without slipping, which is when the balls center of mass is equal to its angular speed....   [tags: physics sport sports soccer football] 1400 words
(4 pages)
Strong Essays [preview]