Find out the difference Essay Example for Free

Find out the difference Essay I am trying to find out the difference in flight time, of a weighted paper helicopter, on comparison to a mass of blue tack with equivalent mass. Variables Things that could be investigated are:   Wing span which would effect the air resistance of the helicopter   Mass attached to helicopter   Wing area   Increase the mass of the helicopter by adding more paper clips which I predict would effect the rate of which the helicopter would fall. Measurement and different interpretation of these variables could be made for example, increasing the amount of mass then compare it with air resistance by timing a piece of blue tact of same mass. Hypothesis What I predict will happen is, as the mass of the blue tact is increased the speed in which it falls will be increased too. Also I predict that as the mass of paperclips are added to the helicopter the faster it will fall. The reason and objects stay at rest is because the two forces on the object are equal. Things that effect the rate of which the paper clip fall are gravity and air resistance: * If an object is released above the ground it falls, because it is attracted towards the earth. This force of attraction is called gravity. As an object falls through air, it usually encounters some degree of air resistance. Air resistance is the result of collisions of the objects leading surface with air molecules. The actual amount of air resistance encountered by the object is dependent upon a variety of factors. To keep the topic simple, it can be said that the two most common factors, which have a direct effect upon the amount of air resistance, are the speed of the object and the cross-sectional area of the object. Increased speeds result in an increased amount of air resistance. Increased cross-sectional areas result in an increased amount of air resistance. I think when theres more paperclips (when the helicopter is heavier) its time of fall would decrease. I think this will happen because the force pulling the helicopter down (weight/gravity pull) is larger when its heavier whereas air resistance is the same. The reason it will fall is due to gravity acting on the mass at nearly 10meters/sec. But the reason why the ball of blue tack and the helicopter will have varying flight times is due to air resistance. A way of increasing an objects rotational momentum is to put most of its mass as far from the centre of rotation as possible as this will maximise its speed and therefore give it more momentum. If a spinning object has more momentum when its mass is far from the centre of rotation, then it must require more energy to make such an object go the same speed as one with its mass in the centre of rotation. In the preliminary tests I decided I would use medium strength sugar paper. The clock is to be started from the top of the ceiling at 2. 5metres and then stopped when the helicopter touches the floor Method. You want to find out the comparison in flight time between the blue tack and the paper helicopter; the helicopter design, which should be used, is attached. Paper helicopter must be kept to the same design each time. First the paper helicopter should be weighed with the specified amount of paper clips on an electronic scale, then the weight should be recreated with a piece of blue tack rolled into a ball. The height of the drop should be stated, then the paper helicopter and blue tack should be dropped at separate times while being timed with a stop watch and recorded. This should be repeated 3 times to make sure no mistakes occur. It is fair test because: 1. Electric scales are used to make sure the measurement are as precise as possible. 2. The test is committed inside thus avoiding wind, which would effect the experiment. 3. It is repeated 3 time in order to make sure no anomalies occur. 4. The same height of which it is dropped will be kept. Some of the variables that can be changed are the weight and design of the helicopter but those will be kept the same by simply making sure accuracy and care is performed. The clock is to be started from the top of the ceiling at 2. 5metres and then stopped when the helicopter touches the floor Risk Assessment. Well the experiment is fundamentally safe with the only danger being that of which you stand on to reach the desired height on to drop the helicopter and the ball. Diagrams Results Analysis The experiment was repeated so that we have 3 separate results for accuracy. What I found out was that although the mass are the same for both object this doesnt mean that they will have the same amount of flight time. This is due to the varying air resistance of the two objects. My results proved my hypothesis to be correct and I also found out was that the higher the mass on the helicopter the faster the helicopter span. As gravity pulls the helicopter down, air pushes up against the blades, bending them up. Because the blades are slanted slightly, some of that push becomes a sideways push. Because you have two blades that are pointed in opposite directions, the two opposing pushes of air cause the helicopter to spin. The rotation speed increases as the weight (paper clips) increases, but a point is reached where additional weight pulls down with such force that the wings move upward and the plane falls like and falling object. Air resistance is proportional to the falling bodys velocity squared. For an object to experience terminal velocity, air resistance must balance weight. An example that shows this phenomenon was the classic illustration of a rock and a feather being dropped simultaneously. In a vacuum with zero air resistance, these two objects will experience same acceleration. But this does not happen on Earth. Air resistance will equal weight more quickly for the feather than it would for the rock. The reason why the helicopter with most paper clips fell faster was due to Terminal Velocity. So a helicopter with more paperclips will experience a Terminal Velocity greater that a helicopter with less paperclips. Trends that happened in the experiment include that as the mass increased on the helicopter the time to fall was shortened and with continued tests would equal out to the same flight time of the ball of blue tack, reducing the effect of air resistance drastically. The paper helicopter initially accelerates due to the force of gravity, because the downward force due to his weight is the only force acting on him. Then it starts to experience frictional force of air resistance in the opposite direction. As the helicopter increases in speed eventually the force due to air resistance is equal to the force due to his weight. This means that the air resistant force is equal to the force due to the weight. This means that the resultant force acting on him is now zero and it continues to fall a constant speed called the terminal velocity. Conclusion What I found out was that as the mass increased on the helicopter the effect of resistance on the helicopter dropped on comparison to the blue tack ball. I found out that although two objects may be the same mass it depends on the other forces effecting it, and in this case it was air resistance acting upon it. The helicopter was better shaped to stay in the air longer, but as the mass increased the wings were unable to open. Evaluation The results did fit into a clear pattern and are as expected, as the mass was increased the rate in wish it fell was faster and as you can see by the comparison of the blue tack it was getting close to the rate of the blue tack. For one example of a slight anomaly is in experiment 1 at the weight at 2. 2g It seems out of place. The results seem reliable and follow a trend with minimal anomalies. Preliminary tests were completed and no alterations were made, as the tests were a success. In the preliminary tests I decided I would use medium strength sugar paper. Some of the reasons that could have caused the anomalies are:   The accuracy of taking the timing could have been at fault   The releasing of the helicopter Things that made the test unfair are:   Every time you put a paper clip, centre of gravity / centre of mass is different. What would have been better to get a precise reading to the falling would have been to use a laser trigger to set the stop clock off because for people to be split second accurate it would be extremely difficult if not in possible. To extend my experiment I would like to drop the helicopters with greater masses on but be able to record the timing of them accurately. References 1. The essentials of AQA science: Double Award Coordinated Physics 2. Key science by Jim Breithaupt Chris Sommers Page 1 10/05/2007.

Sotos Black Hair Essay -- Soto Black Hair Essays

Soto's Black Hair The title of Soto’s â€Å"Black Hair† is very ordinary. The image that forms from the color â€Å"black† serving as an adjective to describe the common noun â€Å"hair† paints a mundane picture that does not allow for any analysis beneath this concrete image. But in cases where the title is not an attention getter, the content of the poem is usually more of a challenge and Soto’s â€Å"Black Hair† is a perfect example. As the title suggests, there are many concrete images and figures presented throughout the poem, but after a close reading it is apparent that the underlying themes of family and culture lay beneath these tangible images through the poetic elements of the metonymy, the metaphor, color imagery, and the pun. The poem begins by introducing the main figure in the poem, a naturally talented baseball player named Hector Moreno. To the narrator, the game of baseball is more than just a simple game, â€Å"it [is] a figure – Hector Moreno† (6). Describing Hector Moreno initially as a figure closely associated with the game of baseball shows just how revered a person Hector is in the narrator’s mind. This image of Hector Moreno is quite concrete, but as the poem continues, the narrator expresses to the reader that his father died sometime during his childhood, as â€Å"his [father’s] face no longer [hangs] over the table† (18). Suddenly the image of Hector Moreno is not as concrete as it first appears, especially through the lines leading up to Moreno’s first appearance on the baseball field â€Å"in the lengthening shade† (4-5). The shadow of the narrator’s father over the dinner table when he was a boy has now taken the form of Morenoâ₠¬â„¢s figure in the shade over the baseball field since the narrator’s father has died. This initial me... ...se, watching Moreno touch home plate is like the narrator being welcomed into the arms of the â€Å"brown people† (30). Because of his difficult home life, the narrator finds comfort and love in the midst of baseball and his Mexican culture. Soto’s â€Å"Black Hair† is a perfect example of a poem that is effective through close analysis of certain concrete images which hold the key to the foundation of the poem and its underlying themes. In this poem, the universal themes of family and culture are hidden under the figure of Hector Moreno, the image of the narrator’s hair, as well as the extended baseball metaphor about culture. Although the title may seem ordinary at first glance, the challenge that the poem presents through its connection of concrete images and themes is very intriguing, and the themes are made clear through the effective use of certain poetic elements.

How does Wordsworth portray real people in The Lyrical Ballads? Essay

Lyrical Ballads, and in particular the Preface to Lyrical Ballads, is considered a central work of Romantic literary theory. In it, Wordsworth discusses what he sees as the elements of a new type of poetry, one based on the â€Å"real language of men† and the work itself avoids the poetic diction of much eighteenth-century poetry, whose most famous exponent was John Milton in Paradise Lost, which benefitted from drastic overuse of verbose Latinate vocabulary. He felt this wasn’t an accurate reflection of real people, and sought to portray them through using language which they used. In the Preface to Lyrical Ballads, Wordsworth famously described poetry as the â€Å"spontaneous overflow of powerful feelings from emotions recollected in tranquility†, and wrote to justify – in theoretical terms – his practice of writing a new and â€Å"experimental† poetry, one whose language is â€Å"fitting to metrical arrangement a selection of the real lan guage of men in a state of vivid sensation.† He rejected the Miltonic approach to poetry, and instead favoured much more Anglo-Saxon words, for their gritty implications – appropriate for a publication in which most of the poems are focused around everyday people and situations. Unsurprisingly, these are very pastoral poems, many of which solely include narrative. Although this may seem mundane for such a famous poet, this was Wordsworth’s statement of protest against the style of the time, and his digression instead led to a new style of poetry in which living language is valued highly, as it allows a sense of man speaking to man, and is a more accessible style of poetry than his predecessors’. In Michael, a poem about a father and son who form an eternal bond (Michael, an eighty-year old shepherd, and Luke, his son), Wordsworth portrays the relationship between the two. The first indication we receive of the tight-knit paternal bond is the use of language when describing Michael’s care for Luke. On two occasions, Michael’s affection is emphasised by using particularly matriarchal language: â€Å"[Michael] had done him [Luke] female service† and â€Å"†¦ female hand† . Wordsworth tries to convey the strength of the bond between the two in an ordinary working family; a clear diversion from the traditional poetry of the time. Michael is evidently a plain, hard-working, content and fulfilled man, but the land he has worked and lived on has to be sold on when his brother defaults on a loan that Michael had guaranteed. From line 236 († â€Å"Isabel,† said he, †¦Ã¢â‚¬ ), Wordsworth uses dialogue for the first time to instill the sense of a soliloquy in the poem. Michael speaks with a Shakespearean dignity; he is more upset that he is soon to lose his land, and his family will be affected, than that his brother has betrayed him. The nature of the poem itself is something which concentrates itself around the ostensibly ordinary; it is, by definition, a pastoral poem. It describes the life of a shepherd and his family, but even this varies from the traditional meaning of the word, as the country scene is far from idyllic. After hearing that his land will have to be sold, and sending off his son in order to make enough money for the family to still be comfortable, Michael goes about constructing a sheepfold, of which Luke lays the cornerstone. This is, again, a seemingly unimportant detail, especially given the content of contemporary poetry, but in the context of a shepherd’s life, this is more than a mere detail, and within the context of the poem, it is critical. Firstly, it provides us with possibly the best example of typically Wordsworthian language in the whole poem: the building materials are described as a â€Å"Straggling heap of unhewn stones†, a phrase which exemplifies the fricative consonants and drawn-out vowels of inherently Anglo-Saxon vocabulary. The pile of stones is also crucial to the poem as it signifies the transient impermanence and brevity of life, which leads us into thinking of Michael’s life – he has worked for â€Å"70 years† for everything he owns, and it is to be taken from him in a relative instant. The sheepfold itself is never finished, as Michael learns that Luke has become a criminal and must flee â€Å"beyond the seas† – every day for the rest of his life, Michael goes to mourn the ‘death’ of his son at the pile of stones, and, seven years later, he dies. The poem’s obvious purpose is to support his notion that a pastoral life is pure, moral, and happy. Wordsworth believed that living close to nature, living an uncomplicated, spiritual life devoted to honest labor was the ideal. His narrative suggests that if Luke had remained in the natural valley with his parents and continued to live the pastoral life, he would have retained his moral character and would have later saved his parents from years of grief. Although Michael is the prime example of Wordsworth’s portrayal of real people in The Lyrical Ballads, several other poems display his wish to convey the lives of real people through techniques such as language and routine situations.

My Sociological Imagination And Push Myself - 858 Words

1. I have developed greatly as a sociologist in that I have developed my sociological imagination and push myself to ask and answer the tough questions about society. Instead of simply taking aspects of our society for face value, I have begun to dig deeper and examine how and why we define differentiate developed and underdeveloped countries or how and why everything is becoming â€Å"faster† within society (fast fashion, fast food, etc.). The readings helped a great deal in my analyzing of society by given me models in how I should properly phrase research questions and how I should aim my research in order for it to answer questions that would ultimately benefit society without including my own bias. â€Å"The Power Elite†, â€Å"On Face-Work†, and â€Å"The McDonald’s System† were all vital in the development of my sociological imagination. â€Å"The Power Elite† by C. Wright Mills is a prime example of sociological work in that Mills analyzes the societal precedents which determine prestige and wealth within the United States. â€Å"The Power Elite† is a timeless work in that it was published in 1956, but in 2016, it is a reliable source in analyzing the â€Å"Power Elite† circle of the United States, which has our entire country in the palm of their wealthy hands. Mills had to complete proper research in order to analyze the â€Å"Power Elite† and that shows that a sociologists cannot simply write what they think of society or how they think it works. One must have substantial and sufficient evidence byShow MoreRelatedThe Sociological Imagination Of Our Everyday Lives1562 Words   |  7 Pagesour everyday lives and our place in society, humans participate in a concept called the sociological imagination. 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