Physics Lab Report Centripetal Force Essay Example

Physics Lab Report Centripetal Force Paper Sketching of the set-up Theory Centripetal force F is the net force causing the centripetal acceleration of an object performing uniform circular motion. Its magnitude is given by the equation: = Mrs.. When an object is whirled in horizontal circular motion in mid-air with a piece of string (as shown in figure 1 above), the centripetal force on the object is provided by the horizontal component of tension in the string: 2 =>2 (since r = L) Procedure 1 A triple beam balance is used to find the mass of the rubber bung, the screw nuts and the wire hook respectively. The total weight of the screw nuts and the wire hook provided the tension T in the nylon thread. 2 The centripetal force apparatus is set up (Figure 2). The paper marker is used to set the length L of the nylon string between the rubber bung and the glass tube to 0. 2 m. 3 Hold the glass tube vertically and whirl the rubber bung around in a horizontal circle. Increase the speed of the rubber bung gradually until the paper marker is just below the lower end of the glass tube (Figure 3). 4 The time of 50 revolutions of the rubber bung is measured and record the exults. We will write a custom essay sample on Physics Lab Report Centripetal Force specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Physics Lab Report Centripetal Force specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Physics Lab Report Centripetal Force specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Calculate the angular velocity w of the rubber bung and the tension T in the nylon string. 5 The steps 1, 2 and 3 is repeated for several times with different lengths L (0. Mm, 0. Mm and 0. Mm) of the nylon string. The results are recorded and the mean tension T in the nylon string is calculated. 6 Compare the mean tension (2) found in circular motion and the weight of screw nuts and wire hook (MGM). Explain their difference (if any) briefly. It the two values are close to each other, it could be concluded that the equation for centripetal force is verified. We have, By y = mix + c, slope of the graph plotted The experimental value of Tension = 41. 5 x 0. 0155 = 0. 644 N, where the theoretical value of Tension = 0. 653 N It is noted that the experimental value of is slightly lower than the theoretical one due to the several sources of error made in the experiment. Percentage error = (0. 653 x Sources of error: 1 . There is friction existing between the string and the glass tube, and there is air resistance. Thus, the motion of the circulation may be affected and the measurement of angular velocity might not be accurate. Secondly, constant speed or constant angular velocity of the rubber bung may not be maintained during the whirling. Thus, the measurement of angular velocity might not be accurate. 3. The radius of the circular motion and thus the length of nylon string L cannot be kept constant throughout the circular motion because there may be a variance of the force applied to keep the paper marker on the level of glass tube. Thus, t he string and paper marker may move up and down and the accuracy of the tension T may be affected. 4. The stopwatch is controlled by human hands. Thus, the reaction time of human brain (around 0. As) may lead to inaccuracy and affect the measurement of time taken and hence the accuracy of angular velocity is affected. 5. There may be miscounting in the number of circulations, because the time for 50 revolutions is quite long and students may be distracted. The accuracy of the experimental results can be improved by the following suggestions: 1. The experiment was carried out with the range of L 0. Mm, 0. Mm, 0. Mm, 0. Mm. Further experiments can be carried out beyond this range to increase the accuracy.

Improve Your Rhetoric Skills Using the Ap Lang Rhetorical Analysis Essay Sample

Improve Your Rhetoric Skills Using the Ap Lang Rhetorical Analysis Essay SampleThe ap lang rhetorical analysis essay sample can really help you improve your rhetorical skills. There are many ways in which you can use the ap lang rhetorical analysis essay sample. Here are some ways in which you can utilize the ap lang rhetorical analysis essay sample to improve your rhetorical skills.The ap lang rhetorical analysis essay sample can help you look at how you express yourself. Most of the people who excel in rhetoric are also very good in other areas such as writing, reading and speaking. If you wish to make the best impression on the clients and friends, you will want to make sure that you have an excellent command of rhetoric. If you are not an excellent writer or reader, you will find it hard to communicate your thoughts and ideas in an effective manner.The ap lang rhetorical analysis essay sample can also help you look at how you can express yourself. Even if you are a good speaker a nd read well, you will want to improve your rhetorical skills. It is a good idea to take a rhetorical analysis lesson from an expert who can show you how to improve your verbal skills.The ap lang rhetorical analysis essay sample can help you go over how you analyze things. Many people make the mistake of saying that they are strong in rhetoric but do not like to analyze. This means that they think that they cannot learn tactics in rhetoric. It is important that you go over how you analyze things so that you can better learn rhetoric.Even if you are excellent analytical skills, you may still find it hard to communicate effectively in your speeches. You need to be able to communicate your ideas clearly. Your speech needs to be able to convey your thoughts clearly.The ap lang rhetorical analysis essay sample can help you go over the techniques of how you can effectively write and express yourself. You will find that many students find it difficult to learn to write. Writing is one of t he main skills that you need to be able to convey your ideas effectively. If you find it difficult to express yourself clearly then you will find it hard to communicate with other people.The ap lang rhetorical analysis essay sample can help you look at the different approaches that you can take to discuss a problem. Often, when you discuss problems you will find that there are other ways to solve the problem. It is important that you look at all the possibilities that you can take to solve the problem.