the study of aerodynamics and gravity Essay - 1515 Words

My topic for the science fair is â€Å" Which falling objects fall the fastest? â€Å". 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 â€Å" concerning the air â€Å", while dynamis means â€Å" powerful â€Å". 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†¦show more content†¦Why couldn’t the apple go up, or left, or right? Why did it go down? In his experiments, he found that an invisible force is pulling us down and keeping everything on the ground. This explained why the apple fell down and not in any other direction. Newton figured out that the force keeps everything on the earth. He discovered that the force even held the atmosphere around the earth. Newton called this force gravity. For example, when you jump, you come back down to earth. If there was no gravity, you would float up and disappear into space. He also discovered different planets have more or less gravity. For instance, Pluto has almost the same amount of gravity as earth, but the moon has much less gravity than the earth. If you jumped on the moon, it would take you more time to get down. Since there is less gravity on other planets, their atmosphere does not keep in much oxygen, thus it is harder to breathe on other planets. That is why astronauts wear spacesuits, to give them air. Because planets with weak atmospheres cannot hold in much heat, it is cold on the other planets, except for those close to the sun. Since we have already figured out who discovered gravity in the physics section, then we will go straight to what gravity does and how it affects us. Gravity holds the atmosphere. The atmosphere holds heat and air as well and it blocks us from the sun’s harmful rays. Without the atmosphere we would all die. We would either chokeShow MoreRelatedAerodynamics of a Baseball1424 Words   |  6 PagesAerodynamics of a Baseball John Eggler Embry-Riddle Aeronautical University Aerodynamics ASCI 309 Bryan E. Spears July 10, 2011 Abstract Aerodynamics is known as the study of the different forces acting on an object and the resulting motion of objects as they fly through the air. Today we know that aerodynamics plays a major role in many sports, such as tennis, soccer, hunting, and motor sports, we will investigate the effectsRead MoreEssay on Testing Aerodynamic Structures for Our Science Fair Project536 Words   |  3 PagesFirst, aerodynamics is the study of the motion of the air. Aerodynamics consists of 4 variables, which is thrust, gravity, lift, and drag. (Tennekes,H, 2009) Aerodynamics has to do with almost everything dealing with air of course.(Tennekes,H ,2009) For example, it can be air crafts, it can be wings, it can be birds, it can be a race car. Birds need aerodynamics so they can glide in the air so they can also gain enough speed to catch prey. Like a hawk swooping down 70 miles an hour to get a mouseRead MoreAerodynamics, A Subset Of Fluid Dynamics827 Words   |  4 PagesAerodynamics, a subset of fluid dynamics, is the study of the behavior of objects when exposed to air. Hydrodynamics, another subset of fluid dynamics, is very similar to aerodynamics and has similar laws. However, hydrodynamics shows the behavior of liquids instead of gasses. Reynolds Numbers, created by British scientist and engineer Osborne Reynolds, describe the way fluids behave against objects. Bernoulli’s principle, discovered by Daniel Bernoulli, states that faster fluid flow creates lowerRead More Physics of Bicycles Essay978 Words   |  4 Pagesfitting clothes and using bikes that are streamlined we are able to reduce the drag coefficient significantly. The study of improved aerodynamics is imperative to any competitive road or track cyclist. Reduction of cross-sectional area can be seen in the image on the right. Notice the skin tight suit, smoothly shaped frame and wheels, as well as a more aerodynamic helmet. Whereas the rider on the left is more of a recreational cyclist and probably would not be seen dead in cycling shortsRead MoreAerodynamics Essay1301 Words   |  6 PagesAerodynamics Aerodynamics is a branch of fluid dynamics concerned with the study of gas flows. The solution of an aerodynamic problem normally involves calculating for various properties of the flow, such as velocity, pressure, density, and temperature, as a function of space and time. Understanding the flow pattern makes it possible to calculate or approximate the forces and moments acting on bodies in the flow. This mathematical analysis and empirical approximation form the scientific basisRead MoreThe Modern Day Sports Cars1538 Words   |  7 Pagesalways said â€Å" Forget that, there are way more to cars then point A to B.† Harry wondered for a little and then asked, â€Å" If so, prove it to me.† Harry’s father then said, â€Å" Well there s the engine, exhaust, aerodynamics, brakes, and lots more.† Harry then tells his dad to be quiet and he’ll study it himself latter. With his research he found out lots more about cars but questioned why the classic car s looked nicer but weren t as fast as the modern day sports cars; this is what he found. Although classicRead MoreDesign And Analysis Of Aircraft Wing1715 Words   |  7 Pagesbending Finite Element Analysis of the aircraft wing using commercial software ANSYS. An aircraft wing is made of composite with fibre angles in each ply aligned in different direction. Various air foil thickness and ply angles were considered to study the effect of bending-torsion decoupling. The laminate characteristics are usually calculated using the number of layer, stacking sequence, geometric and mechanical properties. A finite number of layers can be combined to form so many laminates. TheRead MoreOptimal Controller Essay1144 Words   |  5 Pageswere based on data collected in low-fidelity simulations with unrealistic assumptions: a three degree-of-freedom (two translational, one rotational) model, a constant mass-moment of inertia, no force due to aerodynamic drag, no force due to aerodynamic lift, and a constant acceleration due to gravity [2-3]. Furthermore, it was assumed the state information was noise free and that the actuators reacted exactly as commanded [2-3]. In addition, the previous literature has not explored the effect of landingRead MoreA Simplified Approach On Dynamic Response2007 Words   |  9 PagesSpectral Density Analysis in Sap 2000. The turbulent wind spectrum, aerodynamic admittance and vertical coherence for buffeting wind loading are estimated using Kaimal spectrum, empirical relationship proposed by Vickery and Spatial Coherence of Davenport . The building models conditions are documented as a data bank. Then, the proposed design method is introduced by using design data bank. Then, the method is analyzed by the case studies with respect to various wind speed and height of storeys. By introducingRead MoreBottle Rockets2664 Words   |  11 Pagesnatural stabilities. Bottles with a short center-section and a long neck have a naturally high center of gravity. High, that is, if it is used as a rocket; low if the bottle is sitting on a shelf. Newer bottles are designed this way, because they are less likely to tip over. When we ï ¬â€šip the bottle upside-down, to be used as a rocket, this shape works to our beneï ¬ t, because the center of gravity is already high in the rocket, resulting in smaller ï ¬ ns and less weight that has to be added to make a stable