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An investigation into the effects of a force applied to a spring and the time for it to complete a set number of oscillations

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Introduction

An investigation into the effects of a force applied to a spring and the time for it to complete a set number of oscillations Plan Intro: I am going to investigate the effects of a force applied to a spring and its relationship to the time it takes for the spring to complete a set number of oscillations, when the displacement is constant. While conducting this investigation, I will always bear in mind, that I would like my results to be as accurate and reliable as possible. I have also previously conducted an investigation into the elasticity of a spring, which showed me that the force applied to a spring and its extension as a result of the force applied is directly proportional or constant. Could this imply that the frequency or the oscillations per second have a constant relationship to the force applied also? Safety Safety is paramount in all scientific investigations and this will be no exception. All masses and weights will be handled with care. Masses will not exceed the spring's maximum tolerance so there is no danger of the springs wire breaking. Food will not be consumed in the laboratory nor will drinks be drunk. People will not run in the laboratory. Safety spectacles will be worn so that if, by some unforeseen reason, the spring were to break, eyes will be kept safe. Fair test This will be a fair test by all other variables, within my control, being kept constant. The temperature for this investigation will be room temperature, approximately 23?C. ...read more.

Middle

The spring is manufactured with a hook on both ends. Which means that I can suspend the spring from a Clamp and with the aid of a piece of apparatus with a hook designed on one end and the mass of 100 grams I can attach this to the other hook and add masses to this arrangement. Thus, I have placed the masses vertically in line with the spring. Because I've suspended the spring from the clamp, I'll also need a retort stand and a boss. To make this set-up safe I will place a counterweight at the base of the recall stand with a mass of 5 kilograms, so that he will be greatly heavier then anything I will place on the other side of the set-up. I will use a 1-meter ruler to measure displacement from the base of the mass hook (10cm). I will also use a stopwatch departing how it takes for the spring complete 10 oscillations. For safety reasons selo-tape will be placed around the joint of the spring and the mass hook, so that if the acceleration of the spring is too great and mass hook were to gain enough momentum to come off the hook it would be unable to do so. Equipment that I will need in this investigation include: * 1 Retort stand * 1 Boss * 1 Clamp * 1 One meter ruler * 1 Spring * Masses * Counter weights * 1 one meter ruler * Selo-tape Method The range for this investigation will be 10 Newton's. And will be repeated 10 times to gain accuracy and reliability. ...read more.

Conclusion

The table quite clearly shows that as more force acts on the spring, it takes longer to complete the set 10 oscillations the rate decreases. This is what I predicted. The curved gradient is some thing that I never even considered and could either be the result of me not taking in to account some other variable or that there was errors in the measuring of the variables or maybe this is complete relationship all by it self. Evaluation I think that the set up and equipment used in this investigation was correct and proper for the task at hand. I feel, although not too shore because of the result obtained, that the accuracy was good if not a little excessive in places e.g. the rate of oscillation. I am currently not shore on any improvements for the procedure but if where to conduct a more detailed investigation I would invest some time into finding a more accurate or even reliable method. I believe that the results are reliable to draw up simple conclusions on the behaviour of springs under different forces but I would prefer a second opinion before I say, with any real faith, any more complexes theories on this investigation. I would like to do this investigation again but I would have the variable as the displacement to see if that has any other effects on the rate of oscillation. It could alter the rate by increasing the amplitude of the oscillation, which if the acceleration of the mass were constraint, would take the mass longer to complete the 10 oscillations. I feel it would be some thing worth investigating, may it help me understand what is happening in this investigation more. Keith Thompson 1 ...read more.

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