Conditions for Equilibrium Experiment

Conditions for Equilibrium Experiment Laboratory Report Tricia Desierto, Luis Diaz, Karhen Estella, Gabrielle Beatrix Francisco Department of Biological Science College of Science, University of Santo TomasEspanÃÅ'Æ’a, Manila, Philippines Abstract The object is said to be in a state of equilibrium, when the forces acting upon an object are balanced. There were four activities done in the experiment. In the first activity the equilibrant force was determined. The second activity, unknown forces was determined. For the third activity,center of gravity was located. The last activity, rotational equilibrium was demonstrated. I. Introduction Equilibrium is moving with constant velocity. It is a condition that the rotational  motion of the body may also remain constant. A body is in equilibrium or at rest only when there is no movement or rotation done. When the resultant force acting on the object is zero the object is in equilibrium. The objectives of the experiment are: to determine the equilibrant force by using the component and table method;to determine the unknown forces using the first and second conditions for equilibrium; to locate the center of gravity of a composite body;and to demonstrate the rotational equilibrium. II. Theory A situation wherein the net force acting on a certain object is zero[1] and an object that has no motion or undergoes no rotational and traditional accelerationis said to be in a state of equilibrium wherein net torque and net force on the object is zero in all directions. For an object to be in equilibrium, two conditions should be met. The first condition tells us that the net force acting on the object needs to be zero which only means that for a certain axis of motion, the forces acting along that particular axis should sum up to zero.[2]The second condition needed to attain equilibrium, on the other hand, involves avoiding or neglecting accelerated rotation and it should maintain a constant  angular velocity. A rotating body can attain equilibrium if the rate of its rotation remains unchanged by the forces acting on that certain object.[3] The center of gravity is a geometric property of any object. It is the average location of the  weight  of an object. The  motion  of any object can be described through space in terms of the translation of the center of gravity of the object from one place to another and the rotation of the object about its center of gravity when it is free to rotate.[4] Figure 1. Determination of the Center of Gravity using plumb line technique X= Center of Gravity m=Mass x= distance from a fixed point Equation 1.Center of Gravity Formula When an object is said to be in equilibrium, it is not moving or rotating. The pivotal axis can be any point outside or inside the object. The objects linear and angular accelerations are both zero and the sum of the torquesacting on a system should be equal to zero.The sum of the counter-clockwise torques should be equal to the sum of the clockwise torques.[5] III. Methodology Activity 1: Equilibrant Force Three pans labelled as A, B and C was weighed. Pans A and B were hanged respectively at the 300 and 2000 marks on the force table. 100g was placed on pan A and 150g on pan B. The tension acting on the string, the weight of the pan plus the weight added to the pan was recorded as TA andTB respectively. The two tensions in the strings were balanced by placing weight on pan C or adjusting its position. The tensions are balanced if the pin is exactly at the center of the ring. The magnitude of the equilibrant, the weight of pan C plus the weight added to it, and its position was recorded. The theoretical equilibrant of the two tensions was determined by component method and the % error was computed. Activity 2: First Condition for Equilibrium A cylinder of unknown weight was suspended using the force board by means of two strings. A spring scale was attached to one of the strings and was pulled horizontally until the pin on the force board was exactly at the middle of the ring. The reading on the spring scale was recorded as T1. The angle that the other string made was recorded as ÃŽ ¸. A free body diagram of the ring was drawn. The tension of T2 in the other string and the weight of the cylinder were solved. The cylinder was weighed for the accepted value and the % error was computed. Activity 3: Locating the Center of Gravity A circle with a diameter of 10cm and a square with a side of 10cm were cut out from a card board. The weights of WC and WS were determined. The center of gravity of the composite figure was determined by balancing method and plumb line method. The position of the center of gravity was specified using the leftmost side of the square as the y-axis and the bottom square as the x-axis. The results were checked by actual computation for the center of gravity. Activity 4: Second Condition for Equilibrium The center of gravity of an aluminium bar was located by balancing it on a pencil and the position for the center of gravity was marked. The cylinder used in the previous activity was hanged 5.0cm from one end of the bar. Using the force board, the aluminium bar was supported by means of a spring scale on one end and a string on the other end until the bar assumed a horizontal position. A free body diagram of the bar was drawn. The second condition for equilibrium was used to determine the weight of the bar and the tension in the string. The theoretical weight of the cylinder was used in the computation. The bar was weighed for the accepted value and the % error was computed IV. Results and Discussion V. Conclusion The equilibriant force was successfully determined using the component and table method, with an acceptable value for the % error – 8.70% and 4.47%. The unknown forces were also determined using the first condition of equilibrium with a % error of only 4.57% The center of gravity was defined more accurately with the Plumb Line Method as opposed to the Balancing Method. The unknown forces were unsuccessfully defined using the second condition of equilibrium, as the % error exceeds the acceptable range at 51.76%. VI. Applications VII. References Lesson24:Equilibrium. (n.d.). Retrieved December 8, 2013, from studyphysics: http://www.studyphysics.ca/newnotes/20/unit01_kinematicsdynamics/chp06_vectors/lesson24.htm First Condition. (n.d.). Retrieved December 8, 2013, from boundless: https://www.boundless.com/physics/static-equilibrium-elasticity-and-torque/conditions-for-equilibrium/first-condition/ Second Condition. (n.d.). Retrieved December 8, 2013, from Boundless: https://www.boundless.com/physics/static-equilibrium-elasticity-and-torque/conditions-for-equilibrium/second-condition/ Rotational Equilibrium. (n.d.). Retrieved December 8, 2013, from faculty: http://faculty.wwu.edu/vawter/PhysicsNet/Topics/RotationalDynamics/RotEquilibrium.html Benson, T. (2008, July 18). Center of gravity. Retrieved December 8, 2013, from grc: http://www.grc.nasa.gov/WWW/k-12/airplane/cg.html

Kudler Fine Foods IT Security Presentation Essay

General Questions – General Academic Questions CMGT/400 Week 5 Learning Team Kudler Fine Foods IT Security Report and Presentation Develop a 3,000- to 3,500-word report for the CIO of Kudler Fine Foods.  · This report should cover the material from the previous weeks, providing a comprehensive look at the key safeguards needed for the project at each stage of the systems development processes.  · The report should have clear recommendations to ensure that the final frequent shopper program system is properly secured against likely threats. Include the requirements for future audit provisions the internal staff may use to validate the security measures in the system. Prepare a presentation to executive management at Kudler Fine Foods of the need to make the changes recommended in the paper.  · The presentation should be 8 – 10 slides in length.  · The presentation must include appropriate graphics, and may be in a Microsoft ® PowerPoint ®presentation format.  · Online students will submit a presentation that must include detailed speaker notes.   It is important that you map out your first day at school before your actual first day. Plan out the best strategy for navigating the campus, learning the amount of time it will take to get from class to class. In addition, find the other places that you plan to visit frequently, and note their  location on your map. This document of CMGT 400 Week 5 Presentation includes: Kudler Fine Foods IT Security Presentation General Questions – General Academic Questions CMGT/400 Week 5 Learning Team Kudler Fine Foods IT Security Report and Presentation Develop a 3,000- to 3,500-word report for the CIO of Kudler Fine Foods. For downloading more tutorials visit – https://bitly.com/1rubupQ It is important that you map out your first day at school before your actual first day. Plan out the best strategy for navigating the campus, learning the amount of time it will take to get from class to class. In addition, find the other places that you plan to visit frequently, and note their location on your map. General Questions – General Academic Questions CMGT/400 Week 5 Learning Team Kudler Fine Foods IT Security Report and Presentation Develop a 3,000- to 3,500-word report for the CIO of Kudler Fine Foods.  · This report should cover the material from the previous weeks, providing a comprehensive look at the key safeguards needed for the project at each stage of the systems development processes.  · The report should have clear recommendations to ensure that the final frequent shopper program system is properly secured against likely threats. Include the requirements for future audit provisions the internal staff may  use to validate the security measures in the system. Prepare a presentation to executive management at Kudler Fine Foods of the need to make the changes recommended in the paper.  · The presentation should be 8 – 10 slides in length.  · The presentation must include appropriate graphics, and may be in a Microsoft ® PowerPoint ®presentation format.  · Online students will submit a presentation that must include detailed speaker notes. †¦

Tun Dr Mahathir

This is a Malay name; the name â€Å"Mohamad† is a patronymic, not a family name, and the person should be referred to by the given name, â€Å"Mahathir†. Yang Amat Berbahagia Tun Mahathir bin Mohamad Tun Mahathir bin Mohamad (pronounced [ma? hatir bin mo? hamat? ]; born July 10, 1925) is a retired Malaysian political figure. He was the fourth Prime Minister of Malaysia. He held the post for 22 years from 1981 to 2003, making him Malaysia's longest-serving Prime Minister, and one of the longest-serving leaders in Asia. [1] During his term in office, he was credited for engineering Malaysia's rapid modernisation. 2] Mahathir is also known for his criticisms towards western and developed countries. [3] During his administration, he was considered to be one of Asia's most influential leaders. [4] Mahathir is also noted in the Western world as an outspoken critic of Western-style globalization. [5] Mahathir was born in Alor Setar, Kedah,[6] the youngest of nine children[7] of a schoolteacher and a housewife. His father, Mohamad Iskandar, was of Indian origin, being the son of a Malayalee Muslim (who migrated from Kerala) and a Malay mother, while Mahathir's own mother, Wan Tampawan, was Malay. 8] During World War II, he sold pisang goreng (banana fritters) and other snacks to supplement his family income during the Japanese occupation of Malaya. Mahathir attended a Malay vernacular school before continuing his education at the Sultan Abdul Hamid College in Alor Star. Mahathir then attended the King Edward VII Medical College (the predecessor of present-day National University of Singapore) in Singapore, where he edited a medical student magazine called The Cauldron; he also contributed to the The Straits Times newspaper pseudonymously under the nickname â€Å"Che Det†. Mahathir was also President of the Muslim Society in the college. [9] Upon graduation in 1953, Mahathir joined the then Malayan government service as a medical officer. He married Siti Hasmah Mohd Ali—a fellow doctor and former classmate in college—on 5 August 1956, and left government service in 1957 to set up his own private practice in Alor Star. Mahathir thrived in private practice, and allowed him to own by 1959 a Pontiac Catalina and employ an ethnic Chinese chauffeur (at the time, almost all chauffeurs in Malaysia were Malays, owing to the economic dominance of the ethnic Chinese). 10] Some critics have suggested this foreshadowed a later hallmark of Mahathir's politics, which focused on the â€Å"cultivation of such emblems of power†. [11] From his marriage with Tun Dr. Siti Hasmah binti Haji Mohamad Ali, they have seven children,[12] four sons and three daughters: Marina Mahathir, Mirzan Mahathir, Melinda Mahathir, Mokhzani Mahathir, Mukhriz Mahathir, Ma izura Mahathir and Mazhar Mahathir. [13] Both Mukhriz and Mokhzani [14] are involved in business as well as in politics while their eldest daughter Marina is a prominent local writer and AIDS activist. [15]

Motivation Letter Sample - 6058 Words

Respected Sir/Madam, I, (Your Name), currently in my first year at (XYZ) College, would like to apply for a 6 month internship for a post in the marketing department of your reputed company. I am currently pursuing my Masters in Marketing and at our college, we understand the importance of gaining practical knowledge which will complement the textbook knowledge and help a student gain a wider perspective of the subjects. During this course I have found that I am decently skilled in the art of persuasion, as my teachers and my former employer of 5 years will rightly testify. Ive had a knack of getting my point across very well, communicating with people, understanding their needs and providing them with a value proposition which is†¦show more content†¦In June 2007 I joined The Canadian Heart Research Center (The CHRC) as a Senior Clinical Research Coordinator. I found this position very useful for my development in the clinical research field because it gave me a chance to learn about clinical research from the other side. As CRA I new research from the side of sponsors (pharmaceutical or biotechnological companies), as a CRC I learned clinical research from the side of Principal Investigator. I strongly believe that Master of Science degree will be a very strong and necessary addition to my career path. I see myself in the managerial position within clinical research field; however I think that I have to prepare myself to move forward to my goal. There is no doubt that Master of Science in Clinical Research Administration with the is the right choice for me. I am very motivated to start this program. Steady and successful personal and professional development can not be achieved without growing up educationally. Therefore, it is very important for me join the . Please correct and comment. Dear Sir or Madam: My name is x, and I am a Canadian citizen currently studying at the Università © du Quà ©bec à   Montrà ©al. Along with this letter, I am sending you my complete application form, through the National Student Exchange, for you to consider my admission to Stony Brook University’s fall 2011 semester. Because your institution is highly regarded by scholars and specialists from aroundShow MoreRelatedLetter Of Motivation Letter Sample804 Words   |  4 Pageskind permission as to request a review and further assessment for myself to be considered as a student for a Master’s degree in Energy and sustainable Development in Demontfort University. Kindly allow me to briefly elaborate the reasoning of my motivation to this specific course. As I mentioned above that my previous education stand up on Physics science, which I believe that its associated and connected with a several fields of sciences. This background of my choice is motivating me to carry onRead MoreTeachers Do Not Focus On Phonics1670 Words   |  7 Pagesthe various teaching approaches that teachers can use to teach phonics effectively toward enhancing engagement and motivation of student learning. â€Å"Phonics focuses on the sound-letter relationships used in reading and writing, and involves an understanding of the alphabetic principle - the idea that spoken language is made up of sounds and these sounds can be mapped to written letters† (Hill, 2015, p. 241). Phonics entails phonemic awareness or alphabet knowledge that is, converting various soundsRead MoreExamples Of Data Collection And Analysis Procedure860 Words   |  4 PagesData Collection and Analysis Procedure Before any data can be collected, both a letter of consent and a letter of assent must be administered to all parent or guardian participants of the study. These letters will be distributed by mail in the summer time and be returned to the participating schools within the first week of school. The first student survey will be administered a month into school. All five schools will be required to administer the survey on the same date. Every 1st through 5thRead MoreInvestigating Gender Differences in Helping Essay1485 Words   |  6 Pages primary motivation for altruistic behaviour is seen as a desire to improve the welfare of another person rather than the anticipation of some reward or for any other reason that might indicate self-interest. One of the major problems for psychologists has been determining what is truly altruistic and what might be better explained in terms of egoism. Batson et al.’s (1997) empathy-altruism hypothesis proposes that empathic concern evokes an altruistic motivation. Studies Read MoreMother As Motivator Of Motivator Essay920 Words   |  4 PagesVidhyamandir Trust B.Ed. College Pandesara, Surat. Abstracts: Motivation is the desire or drive within a person to achieve some goal. Mother’s role as a motivator is challenging for her child’s educational development. Objectives of the study are to know the qualities and to know the thoughts of mother as motivator for B.Ed. trainees. 147 trainees of 10 B.Ed. colleges affiliated with VNSGU, Surat were selected by Purposive sampling technique as a sample for present study. Researcher used content analysis methodRead MoreStrenthening Early Literacy Skills in Studnets Language Word Recognitio1634 Words   |  7 Pagesgames such as â€Å"I scream you scream† while clapping each word out and change the name games by removing first letters of words to make new words. Vocabulary based learning can positively help develop literacy development. Children are able to make further connections when words that are already spoken are implemented into new parts of instruction. Implementing sight words, letter patterns, and pictures words are also highly recommended when trying to infuse old and new skills. Enhancing ListeningRead MoreThe Lives Of African American Slave During The Antebellum Slave Period1557 Words   |  7 Pageshistory through the lives of slave women. In the sample writings of a few slave women from their letters of the nineteen century, Hannah Valentine and Leath Jackson depict how their lives were lived during the writing and expression of their letters. During this time period, these women made the best of their lives within the institution of slavery through motherhood and religion. In the example of using the letters of Hannah Valentine as a sample of source credibility in motherhood, she begins byRead More Students vs. The System Essay1042 Words   |  5 Pagesthink that a majority of professors agree that grading hinders teaching and creates a bad spirit, going as far as cheating and plagiarizing† (Goodman 206). Here, he talks about how grading has lost its power, and has been reduced to a meaningless letter on paper that tempts students to cheat in order to receive a passing grade on their assignments. He also goes on to declare that, â€Å"†¦grading is inevitable; for how else will the graduate schools, the foundations, and corporations know whom to accept†¦Ã¢â‚¬ Read MoreAnalyzing Stanley Milgrams The Lost Letter Experiment1538 Words   |  6 PagesThe Lost Letter: Stanley Milgrams experiment Stanley Milgram is one of the most influential of the American postwar social scientists. Milgrams reputation lies not so much in his construction of wide, over-arching theories but in his ability to create provocative, strange even controversial experiments that test conventional notions of moral behavior. Although profoundly different, many of Milgrams experiments possess a common theme that of the situation-specific nature of morality. Humans wereRead MoreOrganisational Culture and Motivation1496 Words   |  6 PagesReading INTRODUCTION AND RATIONALE As Desson and Clouthier (2010) state, culture is an important factor in both attracting and retaining desirable employees. The extent to which an employee’s needs and expectations are fulfilled will determine the motivation, job satisfaction and performance levels (Mullins, 2005, p. 499) which would be influenced by culture. XY Ltd (XY) established in 1944 has become the market leader in sea trade in Sri Lanka at present with the areas shipping, marine services and