Biomechanics of Tyrannosaurus Rex
Do you remember sitting in the movie theatre as an 8 year old child watching Jurassic Park? The continuous action left your bones chilled and your frail youthful body stuck to the seat. But you couldn’t get enough of this movie because you knew that it was a privilege for you to see a rated R flick. But just when you thought that you could take no more, enormous Tyrannosaurus Rex flooded the screen running after a jeep going at least 50 miles per hour. The problem wasn’t that T-Rex looked fearsome but it was that he outran the jeep. In your mind you wondered how such an extremely large animal could move like the wind but you decided not to question it. As a kid you knew that a T-Rex couldn’t move that swift but just recently the scientific world began to catch on.
Scientists have come to some very valuable conclusions through the study of biomechanics. Biomechanics is the application of the principles of mechanics to living systems, particularly those living systems that have coordinated actions. Unlike claims, dinosaurs can be analyzed through biomechanics because they move systematically. But the question still remains could Tyrannosaurus Rex run as fast as they say? Many people have attempted to answer this question, only few have come to a valid conclusion.
The most famous study on the biomechanics of T-Rex was by Hutchison and Garcia. They discussed whether or not the short-armed T-Rex could run very fast considering its massive size. Through this hypothesis a model was created. The model designed by Hutchinson and Garcia used physics and biological equations to calculate the amount of leg muscle an animal needs to remain balanced during fast running. While running at great speeds an animal pushes against the ground in order to support itself. This also means that the animal exerts force proportional to its weight every time its foot hits the ground. As a result, the ground pushes back upwards on the leg with a vertical force. That vertical force, called a ground reaction force, is about 2.5 times body weight during fast running.
Hutchinson and Garcia's model calculates the ground reaction force along with other necessary factors such as the length of limbs and stance to determine the amount of muscle mass that would be needed to maintain equilibrium.
The Revisionists and the orthodox views are different opinions on President Truman’s decision to use the atomic bomb. The revisionists believed that Truman’s decision was wrong and there could have been alternatives. They say that the Bomb was unnecessary and it was only used as a “diplomatic tool” and to show the power of th...
This experiment was completed in order to compare calf circumference as well as gender, weight, and jump height. If a person has larger calves, then they will likely be capable of reaching a higher vertical height. It can also be shown that if the person is a male, then they will be able to jump higher. A larger calf circumference is more likely to reflect a high vertical jump due to the fact that the fat content of the calves in the experiment was accounted for, therefore a large calf measurement in this experiment means a muscular calf. It is common knowledge that more muscle will result in stronger legs leading to a higher vertical. While it is believed that males are bigger, faster, and stronger, this leads us to believe that they can also jump higher. Males tend to have stronger muscles at nearly all points in life(Burr, 1997). That being said, the aforementioned hypotheses can be expected to be true because males are likely to have larger, and therefore stronger, calves. It can also be expected that males will display a higher vertical jump(Caruso, 2012).
O'Neal, Michael. President Truman and the Atomic Bomb: Opposing Viewpoints. San Diego, Calif.: Greenhaven Press, 1990. Print.
Truman’s decision to use atomic weapons has long been a controversial subject throughout the decades after he used it. Many scholars and people who surrounded the president at the time published memoirs and books about the decision to use the weapon. As years went, more works of writing and information were released which added more information to the vast knowledge we have of the decision to drop the bomb and of what the Japanese faced after the event took place. J. Samuel Walker wrote a book called Prompt & utter destruction which uses new knowledge gained about the bomb and new information the Japanese released, which Walker said, “has greatly enriched our understanding of the agonizing deliberations in Tokyo over ending the war” (ix).Walker did not take any sides in the book, however, he uses what material from the first book and new sources of information to evaluate why President Truman made his decision. The main focus of Walker’s book is to answer why President Truman used atomic bombs against Japan and open more discussion to the question “was the bomb militarily necessary or was it used primarily for political/diplomatic reasons that had more to do with impressing the Soviets than winning the war against Japan?” (xii), which Walker said the question “divided specialists” (xii).
The atomic policy against Japan was closely related to the fear of Soviet expansion in Asia. U.S. leaders were strongly conscious of Russia’s agreement at Yalta to join the war against Japan three months past Germany’s surrender on May 7, 1945 (Fogelman, 124). Among the U.S. invasion of Japan planned for November 1, 1945, U.S. officials were doubtful about the cooperative mission with Russia in which Russia would have power at the peace table. However, the successful detonation at Alamogordo had transformed everything. The bomb guaranteed that the U.S. no longer required Russian aid to win in the Pacific (Wainstock, 132).
The article Tyrannosaurus Rex was a Slowpoke by John Roach relieves us of our fears when it states that, “the Cretaceous landscape was filled with large, lumbering creatures that any human with a fast car or bike or maybe even a quick sprint could outpace” (Roach). He tells us that T-Rex, “did not have the leg strength to run very fast, if at all, according to a computer model developed by two experts in the mechanical movements of living creatures,” and, “bring the discipline of biomechanics to the long and at times contentious debate over just how fast the largest of the largest creatures ever to roam Earth could run.”
“66 Million–Year–Old Dino With A Heart.” Media Kit 17 April 2000. North Carolina University. 2000 <http://www.dinoheart.org/mediakit/index.html>.
Holden is like most teenagers: he’s trying to find his place in society without having any sort of direction. One of the main reasons this is hard for Holden is because he doesn’t have any role models and is misguided. His brother D.B. lives all the way in Hollywood “being a prostitute” (Salinger 2) and he resents his parents. Everyone around him seems to be “phonies “and Holden is continuously trying to be different but notices that the lifestyle he wants just doesn’t fit in the world he lives in . He constantly rejects certain ways of living but can’t seem to find the purpose for his own and because of this he criticizes the life of the...
We use dinosaurs to represent the changes in nature that have occurred throughout time. Studies found that although the “oldest rock did not show evidence of life, the progression of plant and animal life that changed in recognizable intervals, from ancient life, age of reptiles to the age of mammals” (Dino Nature Metaphor, slide 6), measured the age of the earth. When we think of dinosaurs in relation to nature, we think of that very powerful force that controls the cycle of life. Nature was able to yield such magnificent ferocious creatures that walked the earth and then take them back when they served nature’s purpose. Dinosaurs fit perfectly in nature’s constant
... of classifying what qualifies an I/O psychologist and the dual role I/O psychologists can operate in within their field. A qualified I/O psychologist by definition stretched to consider doctoral psychologist as well as degrees held from a school of business, or administrative science. Qualified I/O psychologists must possess a strong knowledge of research and scientific methods. Also, the programs must be founded from an accredited psychological program or university (“Specialty Guidelines”, 1981, p. 665). Throughout reading the multiple articles an important point to call attention to is the inclusion of multiple other forms of degrees which can be considered as a prime factor of I/O psychology’s complexities. Speaking to the multi-layered discipline, the struggle of boundaries between the Industrial side and the Organizational side has yet to be perfectly found.
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Jurassic Park is a fantastic movie for its life-like re-creation of dinosaurs and its outstanding use of computer generated images and sounds. From the first scene where dinosaurs enter the frame to the last, they bring a level of excitement to the screen like only the mighty T-Rex does. Industrial Light and Magic and Stan Winston’s
Recorded videos were used to analyze the movement patterns of the runners. The participants were an elite (male) and a novice runner (female). The elite runner used a standard track field while the novice used a treadmill in a standard gym. The result showed that the elite runner had a longer stride than the non-expert due to his long legs. The novice runner required less force to move her body than the elite runner. The expert had longer stride resulting in longer step length which made him move faster than the novice. As the feet of both participants touched the ground the expert had a higher ground reaction force than the non-expert. The elite had a higher cadence than the non-elite because his legs moved faster. During stance phase, they both have one foot on the ground and as their foot first hit the ground they both slow down. However, the novice was slower because the elite had a faster speed making him spend less time in the
Although Holden can be described as a realistic, cynical teenager, he can also be categorized as straightforward. This is one of Holden’s strengths, he sees the truth for what it really is, not how he wants it to be. For example, Holden describes his old school, Pencey Prep, saying, “I didn’t know anyone there that was splendid and clear-thinking at all.” (Salinger 3) Pencey Prep had claimed that they had the capability to “mold” young men, but Holden could see right through it. Holden’s straightforward characteristic also leads him to be independent and self-reliant, which are also Holden’s strengths.
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