Free Essay

Pendulum Coursework

In:

Submitted By enyazazueta
Words 905
Pages 4
Pendulum coursework
The year 10 extended group is investigating a pendulum; each one of us is going to change something to it, to make the investigation more interesting.
The things that we could change are: * The length of the string (20,40,60,80,100,120,140,160,180,200; in cm) * The weight of the plasticine (55 grams) * Shape of the object, aerodinamicity (ball, sphere) * The angle of where you started to throw the plasticine, (45º)
The things that we could measure or observe are: * Amounts of laps in a given time (10 laps) * In how much time it stops * Its speed/ acceleration * Time to do certain amount of laps
I decided that I will change (independent) the length of the string of the pendulum (measurements: 20, 40, 60, 80, 100, 120, 140, 160, 180, 200; in cm) and I will measure/observe (dependent) time to do certain amount of laps. (10 laps.)
My question is: How much time it takes to do 10 laps?
What I will keep the same is: * The weight of the plasticine (55g) * The shape of the object (sphere) * The angle of where I started to throw the plasticine (45º)
My prediction is:
When I change the length of the string of the pendulum I think what will happen to the laps of the pendulum is that as longer the string the less laps will the pendulum do.
This is because the pendulum will take more time to return to its initial point, for the reason that it is a longer distance to travel so it will take longer.
Method
1. Make the pendulum depending on what you are going to change and measure.( length of string: from 20 cm to 200 cm, increasing each time by 20 cm; plasticine: 55g, sphere) 2. Tie up the pendulum to the clamb stand. 3. Throw the pendulum in an angle of 45º and obtain the time it takes to the pendulum to do 10 laps. 4. Throw the pendulum 3 times for each measurement. 5. Write the results and take the average for each measurement.

Clamb stand
Sphere of plasticine
Cronometer
String

Length of the string in cm | Time to cover 10 laps in seconds | | | | 1 | 2 | 3 | Average | 20 | 8.58 | 8.60 | 8.87 | 8.68 | 40 | 12.51 | 12.52 | 12.66 | 12.56 | 60 | 15.39 | 15.64 | 16.03 | 15.69 | 80 | 17.87 | 18.12 | 17.98 | 17.99 | 100 | 20.37 | 20.23 | 20.68 | 20.43 | 120 | 22.29 | 22.55 | 22.58 | 22.47 | 140 | 24.48 | 24.34 | 24.37 | 24.40 | 160 | 25.96 | 25.92 | 26.11 | 26.00 | 180 | 27.05 | 27.82 | 27.87 | 27.58 | 200 | 29.47 | 30.04 | 29.56 | 29.69 |

When I changed the length of the string of the pendulum what happen to the time it took to do 10 laps is that the pendulum took more time to do the 10 laps when the string was longer.
This happened because as the length of the string was becoming more longer the more the string was stopping the speed as the string although is very thin it occupy a space or a mass that forces to stop the acceleration the object has, also when the string is shorter the pendulum doesn’t have to travel a long distance as the longest string has to travel to return to its initial point.
My prediction was correct because the time it took for the pendulum when the string was shorter was less than the time it took when the string was longer to do ten laps.
There wasn’t an extremely rare anomaly because as we can see, the line of the graph was fairly following a pattern, but if the line would have been perfect the line would be really straight and all the results would be the same, seeing that we can see in the graph the line is a little bit curve although it continues with the pattern it should follow.
These happened since I threw the pendulum correctly, which means that I threw it at an approximately the same angle so it would be a fair test and also i threw it in the exactly same place and same day.
I could have improved by throwing the pendulum in the exact angle every time so I could have a more accurate graph and results, also by checking that the object is the same shape because this also can affect the speed or acceleration of the object or pendulum.
What I could do next is doing this experiment or investigation with someone else because when I had to throw the pendulum it was a little bit difficult because I had to throw the pendulum, hold the timer and hold the clamb stand so it wasn’t as accurate as I wanted to be; another thing that I could change or improve is having or buying an automatic chronometer so that when I throw the pendulum in that exact moment the automatic timer starts, and the results are more accurate that the results I have.
My conclusion is that it was a fair test because as we can see in the graph, the line is nice and curved (as it should be), so it demonstrates that the longer the string the more time it will take to do 10 laps.

Similar Documents

Premium Essay

Persona; Audit

...SKILL | SUMMARY | CONFIDENCE/COMPETENCE | EXAMPLES | HOW TO DEVELOP | Written communication | I can write clearly and concisely in a range of different formats to communicate messages effectively to varied audiences. | 1 2 3 4 5 | I can word-process and use the computers to complete school work and use e-mail and social networking | Read more factual and fictional books Read posters, adverts develop my literacy skills | Oral communication/presentation skills | I can summarise and communicate information effectively when speaking with people or delivering presentations. | 1 2 3 4 5 | I speak to my friends and teachers. I can communicate with my teachers and with new pupils. | I going to practice more in lessons and participate in presentations within the class. This will help me practice my speaking skills. | Time management | I can manage my time and prioritise my workload to ensure that I produce high-quality work within set deadlines. | 1 2 3 4 5 | I able to have a job but also complete any homework and still have spare time. | Write a to-do list for each day and tick stuff of when completed. Or make a timetable for homework. | Problem-Solving | I know how to find logical, constructive, and realistic solutions when I am presented with complex problems. | 1 2 3 4 5 | When I don’t understand a piece of work I go and ask others or a teacher for help. | Try again to solve the problem, if not look it up online...

Words: 517 - Pages: 3

Free Essay

Persuassive Essay

...Adult College Students Who Work Adult College Students Who Work Rose Savage Comm 215/ Essential of College Writing October 10, 2011 Instructor: Rachel Delgado Adult College Students Who Work Rose Savage Comm 215Essential of College Writing October 10, 2011 Instructor: Rachel Delgado Adult College Students Who Work There are more adult college students who are working while they attend school, but this may not be a healthy one because the adult learners are distracted from their studies and are unable to participate in normal activities and are jeopardizing their home, school, work and health. It is not healthy for an adult student to work and attend to other aspects of their life without thinking about leaving the college environment and just tend to the everyday need of their families. Adult learners are returning to college by the thousands to learn that they may not be able to handle such a heavy workload when they start out, but some adult learners says that they can handle the pressure of family, school and work. Is this healthy for the adult learners or are they headed for more than they bargain for. Coupled with financial strain, work and family commitments accounts for more than 50 percent of adult college students dropouts according to a study conducted by the Inside Track, a national student coaching company. (Dewey Square Group) According to the company...

Words: 1149 - Pages: 5

Free Essay

Family Values

...Family Values As I walked into the house, I could almost taste the eggnog that would be waiting for me on the table. Eyeing the plate of cookies, I forced myself to follow my Gram up the stairs to the attic. The cookies could wait. I had come to help my Gram set up her miniature Christmas village. For Christmas each year I would give my Gram a new building, ice skater, or tree to add to her village. Her face would light up as she found the perfect place for the village’s newest addition. About two weeks before Christmas I would arrive at my Grams house to help her set up the village. I would watch in amazement as she placed each individual piece in the same exact place as she had the year before - slightly altering the village to welcome the newest addition. This was my favorite Christmas tradition when I was a child, and I looked forward to it every year. Although I live a distance away from my Gram, I visit frequently and wish I had more time to do so. She has always been completely engaged in my daily life, and it would seem strange to not see her on the first day of school each year, camera in hand, eager to take my picture. My Gram acts as a second mother to me, and I can always count on her for support. I have grown to trust her completely and she always seems to be the person who is there to help me. My Gram is the first person I go to for help and I can talk to her about virtually anything. Regardless of the subject of our conversations, she loves the fact...

Words: 506 - Pages: 3

Premium Essay

Survival Guide

...Writing academic papers or just your normal day to day school work can be very intimidating at times. As long as I have the determination and the drive to succeed, conquering these obstacles will be a relatively easy task. Unlike traditional college where you go in and sit in a class and have months before you finish, online schooling is much more demanding. It requires that you have the motivation to complete your work on time and learn the material that is presented in front of you. A lot of knowledge can be carried on from one’s high school experience but like many people, polishing up those skills you learned years back is much needed. What I hope to accomplish with my survival guide is to develop much needed strategies that will help me in my studies in college. Conducting research for academic papers or even discussion questions is not just an option but a requirement. There are many ways to conduct research and with all these sources at your fingertips. Because of the many sources the task can seem overwhelming at times. One powerful tool at everyone’s disposal is the internet. This is a very valuable tool because there is a wealth of information available. Be warned because not all the information on the internet is creditable. A good way to get accurate information is to cross reference several sites and exempt information that is not correct. Another way to conduct research is through the University Library. Much like a search engine on the internet, the University...

Words: 1110 - Pages: 5

Free Essay

Inverted Pendulem

...Standup and Stabilization of the Inverted Pendulum by Andrew K. Stimac Submitted to the Department of Mechanical Engineering in Partial Fulfillment of the Requirements for the Degree of Bachelor of Science at the Massachusetts Institute of Technology June 1999 © 1999 Andrew K. Stimac All Rights Reserved. The author hereby grants permission to MIT to reproduce and distribute publicly paper and electronic copies of this thesis document in whole or in part. Signature of Author: ............................................................................................................ Department of Mechanical Engineering May 5, 1999 Certified by: ......................................................................................................................... David L. Trumper Associate Professor of Mechanical Engineering Thesis Supervisor Accepted by: ........................................................................................................................ Ernest G. Cravalho Chairman, Undergraduate Thesis Committee Department of Mechanical Engineering Standup and Stabilization of the Inverted Pendulum by Andrew K. Stimac Submitted to the Department of Mechanical Engineering on May 5, 1999, in Partial Fulfillment of the Requirements for the Degree of Bachelor of Science in Mechanical Engineering. Abstract The inverted pendulum is a common, interesting control problem that involves many basic elements of control theory...

Words: 6866 - Pages: 28

Free Essay

Measuring G

...Report: Acceleration of gravity, g Introduction In this experiment you will be measuring the acceleration of gravity using a pendulum like apparatus. The value of g is an important issue as it forms the basis for many mathematical theories and allows for life to exist on this planet. If we keep in contact with the Earth, ordinary tasks will be very difficult. Establishing due value for the acceleration of gravity allows to utilise many of theories that could allow us to solve the big problems. Everyday life would be difficult if we did not have gravity, we would be constant free fall and stopping us to function as a society. The concept of zero gravity can be seen on the International Space Station (ISS), however theoretically they should be not experiencing as they as still in the Earth's gravity field however as the constantly circling the Earth to stay above the surface this causes a state of free fall allowing for the zero gravity to occur in the ISS. You will be using this setup to calculate the acceleration due to gravity using pendulum motion. The investigation is designed to demonstrate: • Air friction • Pendulum motion • Acceleration due to gravity Historical Context: Gravity has been long-known concept, first conceived Isaac Newton with the famous moment of the apple dropping on his head. With that remarkable accident, he derived the law of universal gravitational attraction. F =G ( m1 m2 ) d 2 F = Attraction force between two objects (N) G = Universal Gravitational...

Words: 1071 - Pages: 5

Free Essay

Burma Road Riod

...Pisa, Italy on February 15, 1564. He was the oldest of seven children. His father was a musician and wool trader, who wanted his son to study medicine as there was more money in medicine. At age eleven, Galileo was sent off to study in a Jesuit monastery. After four years, Galileo had announced to his father that he wanted to be a monk. This was not exactly what father had in mind, so Galileo was hastily withdrawn from the monastery. In 1581, at the age of 17, he entered the University of Pisa to study medicine, as his father wished. Galileo Galilei - Law of the Pendulum At age twenty, Galileo noticed a lamp swinging overhead while he was in a cathedral. Curious to find out how long it took the lamp to swing back and forth, he used his pulse to time large and small swings. Galileo discovered something that no one else had ever realized: the period of each swing was exactly the same. The law of the pendulum, which would eventually be used to regulate clocks, made Galileo Galilei instantly famous. Except for mathematics, Galileo Galilei was bored with university. Galileo's family was informed that their son was in danger of flunking out. A compromise was worked out, where Galileo would be tutored full-time in mathematics by the mathematician of the Tuscan court. Galileo's father was hardly overjoyed about this turn of events, since a mathematician's earning power was roughly around that of a musician, but it seemed that this might yet allow Galileo to successfully complete...

Words: 365 - Pages: 2

Free Essay

Physics

...Simple Pendulum Investigation Purpose To investigate the different factors, such as varying length, mass, and angle, that affect the period (Time) of a pendulum every 10 cycles. Hypothesis I predict that the pendulum period will change by the length you add to the string. The more length, the longer period cycle. Also the mass will not effect the period since regardless of how heavy an object, everything falls at the same speed. Finally the angle will not make too much of a difference since I do not think it is a big factor. Materials 1 M String Retort Stand Mass Set Meter Stick Protractor Stop Watch Procedure First of all, the retort stand was set up to create a simple Pendulum. The string was attached to the cork on the out most end of the retort stand. We attached our desired mass wight (100g) to the end of the string. Then, the string had been adjusted to its first height of 15 cm, measured using a meter stick. Next, the 100g mass was held to a 30 degrees angle, from which it was to be dropped The person with the stop watch counted down from 3, which was the signal to start the timer and drop the mass weight at the same time. Once 10 cycles were completed (mass weight reached it starting position), we recorded the time it took in our data table. We repeated steps 3-6, each time changing the height of the string by 10 cm. Diagram Data and Observations Table 1: Pendulum Period versus Pendulum Length...

Words: 867 - Pages: 4

Free Essay

Pendulum

...How pendulum length affects the time of swing AIM: To find the relationship between the length of a simple pendulum and the period of swing Hypothesis: The longer the length of a simple pendulum, the longer will be the period of oscillation Materials: Retort stand, pendulum mass, clamp, ruler, stop watch and string Method: Functional Diagram Procedure * Set up retort stand and other equipment * Decide angle of swing (40o) * Measure length by metre ruler * Measure length of pendulum (20cm) * Measure the time of 4 swings * Average the time taken of 4 swings * Change the length of pendulum to (30cm) * Measure period of 4 swings * Average the time taken of 4 swings * Change the length of pendulum to (40cm) * Measure the time taken of 4 swings * Average the time taken 4 swings For safety (nothing important) A. Average the 4 swings B. Repeat the experiment as often as possible Results (See assignment book) Conclusion There is a relationship between the pendulum length and the period of time taken for the pendulum to swing. When the length of the string is increased, the value of the period also increases. When the length of the string is decreases, the period also decreases. The length of pendulum does change the duration of the swing. Discussion A. To improve the experiment the angle (40o) has to be the same, the length of pendulum has to be...

Words: 286 - Pages: 2

Premium Essay

Physics Lab

...Abstract: In performing the Simple Harmonic Motion Lab, our goal was to determine the period of motion for objects performing simple harmonic motion. We did five trials of measuring the time it took a pendulum to make 30 complete oscillations. We divided that time by 30 to get the period and then took the average of all 5 trials, getting an average period of 1.88 seconds. To compare our results, and see if they were correct, we used the given equation for the period of motion that includes the length of the pendulum to calculate the period for the same pendulum, resulting in 1.87 seconds, which agreed with our earlier results. This shows that period of oscillations can be determined by length and gravitational acceleration, and doesn’t depend on mass.             In our other activity, we measured the period of an oscillating mass connected to a spring. We had a hanging spring, and hung mass to the bottom of it, each time measuring the change in length of the spring from the time before. To find the spring constant, we used the masses added to calculate each of their elastic forces, by multiplying each by gravitational acceleration, then plotting them with their corresponding spring deformation, and the slope of that graph was the spring constant, k, which was 8.22 N/m. Using this value, we calculated the period of motion for the mass of 0.1 kg using a different given equation than the one before, obtaining a period of 0.69 seconds. To verify our results, we used the VideoCom...

Words: 628 - Pages: 3

Free Essay

Physics Empa Revision

...on a capacitor at any point we use this equation. To calculate the charge left on a capacitor at any point we use this equation. Capacitor Discharge Capacitor Discharge When the switch is at A the capacitor charges exponentially up to a point where the capacitor cannot hold anymore electrons When the switch is at A the capacitor charges exponentially up to a point where the capacitor cannot hold anymore electrons When 2 Pendulums are suspended from the same piece of string when one pendulum is displaced it can transfer energy to the other pendulum causing it to swing When 2 Pendulums are suspended from the same piece of string when one pendulum is displaced it can transfer energy to the other pendulum causing it to swing This occurs because the pendulums have the same length string and as the resonant frequency of the pendulums depends on the length of the string they have the same resonant frequency. This occurs because the pendulums have the same length string and as the resonant frequency of the pendulums depends on the length of the string they have the same resonant frequency....

Words: 1924 - Pages: 8

Premium Essay

Business Purpose

... | Rules and regulations: |Plagiarism is presenting somebody else’s work as your own. It includes: copying information directly from the Web or books without | |referencing the material; submitting joint coursework as an individual effort; copying another student’s coursework; stealing coursework from| |another student and submitting it as your own work. Suspected plagiarism will be investigated and if found to have occurred will be dealt | |with according to the procedures set down by the College. Please see your student handbook for further details of what is / isn’t plagiarism.| Coursework Regulations   1. Submission of coursework must be undertaken according to the relevant procedure – whether online or paper-based. Lecturers will give information as to which procedure must be followed, and details of submission procedures and penalty fees can be obtained from Academic Administration or the general student handbook. 2. All coursework must be submitted to the Academic Admin Office and a receipt must be obtained. Under no circumstances can other College staff accept them. Please check the Academic Admin Office opening hours. 3. Late coursework will be accepted by Academic Admin Office and marked according to the guidelines given in your...

Words: 2134 - Pages: 9

Free Essay

Time Log Template

...------------------------------------------------- Time Log Template Make a list of all activities you accomplish in one day. Be as specific as possible, and include a scheduled time for study. This log may be used in future courses to schedule time for study and course work. Time | Activities | Comments or Observations | 6:00 a.m. | Wake the children, breakfast and dressed for school | | 6:30 a.m. | Brush teeth and hair; 6:45 out the door for school | | 7:00 a.m. | Drop the kids off for school | | 7:30 a.m. | Put in a load of laundry, Clean kitchen, walk the dogs | | 8:00 a.m. | Throw laundry in dryer start another load, make daily phone calls while cleaning | | 8:30 a.m. | Start on school work | | 9:00 a.m. | school work | | 9:30 a.m. | school work | | 10:00 a.m. | school work | | 10:30 a.m. | school work, just encase I need extra time/ getting ready for meetings | | 11:00 a.m. | Dust and vacuum while welcoming new wives via phone call | | 11:30 a.m. | Coffee meeting or luncheons | | 12:00 p.m. | Coffee meeting or luncheons | | 12:30 p.m. | Coffee meeting or luncheons | | 1:00 p.m. | Come home walk the dogs | | 1:30 p.m. | Leave to pick up kids from school | | 2:00 p.m. | Check emails, fix snacks for kids | | 2:30 p.m. | Help kids with homework | | 3:00 p.m. | Clean up | | 3:30 p.m. | Start prep for dinner | | 4:00 p.m. | Cook dinner | | 4:30 p.m. | Cook dinner | | 5:00 p.m. | Husbands home from work...

Words: 442 - Pages: 2

Free Essay

Mr Patton

...Time Log Template Make a list of all activities you accomplish in one day. Be as specific as possible, and include a scheduled time for study. This log may be used in future courses to schedule time for study and course work. |Time |Activities |Comments or Observations | |6:00 a.m. |Work | | |6:30 a.m. |Work | | |7:00 a.m. |Work | | |7:30 a.m. |Work | | |8:00 a.m. |Work | | |8:30 a.m. |Work | | |9:00 a.m. |Work | | |9:30 a.m. |Work | ...

Words: 341 - Pages: 2

Free Essay

Narrative Essay

...Summer break had just ended. Where did the time go? Well it back to the books I said to myself I wonder what’s in store for me this year. I could hardly believe it’s my final year in school. Like my teachers would say “getting ready for the real world.” When I returned to school, I was so excited to see all of my friends, we hugged, we talked about summer vacations and then the bell rang from homeroom. I was in Mr. Henry’s homeroom, I was glad; he is cool one of the coolest teachers. Announcements came on and then it was off to Convocation. Mrs. Knowles addressed the entire school and then turned her attention to the seniors, she reminded us about the seriousness of this year and how at some point during the year we may have to make decisions that can affect our life forever! I am sitting thinking to myself “what kind of decision will have to make that will affect my life? I have a mother who makes those decisions for me.” The following day classes were in full swing, and the work load was heavy, but it was nothing I couldn’t handle. I had settled down a whole lot and my last report card was a reflection of it, it was the best report that I had gotten in years. And oh boy wasn’t my mother proud! The school year was going by so quickly before I could blink my eye we were taking year book pictures, getting measured for cap and grown and the deadlines or course work was almost here. I remember this particular morning, I arrived at school and just as I came out of the car. Kwame...

Words: 1164 - Pages: 5