OCR B Advancing Physics Physics Practical Investigation Coursework Investigating Simple Harmonic Oscillations
Physics Practical Investigation Coursework Investigating Simple Harmonic Oscillations This investigation aims to explore the nature of different oscillating systems, including the factors upon which the oscillation depends and the energy transfer involved. Preliminary Experiment A pendulum was made using a bob hanging, by a piece of string, from a standing clamp. Experiments were carried out, recording the time taken for ten complete cycles from angles of displacement ranging from 5 to 30° in 5° intervals. In separate experiments, the mass and string length were changed as the independent variables in order to investigate the effect they had upon the period of oscillation. The mass of the bobs used were 100, 200 and 300g; the length of the string varying between 15cm and 30cm. For each experiment, three trials were completed in order to allow identification of anomalous results and enable the calculation of an average time - this value was then divided by ten in order to work out the average time of one oscillation. Length of string: 0.15m Average time for 1 oscillation (s) Amplitude: Angle of initial displacement (degrees) 00g 200g 300g 5 .08 .08 .09 0 .08 .09 .09 5 .09 .09 .09 20 .08 .09 .08 25 .09 .10 .09 30 .09 .10 .09 Length of string: 0.3m Average time for 1 oscillation (s) Amplitude: Angle of initial displacement (degrees) 00g
Physics a Nuclear Bomb
Table of Contents Page Number Content ---------------------------------------------------- --- 2---------------------------------------------------- Introduction 3---------------------------------------------------- Discussion 4---------------------------------------------------- Discussion 5---------------------------------------------------- Discussion 6---------------------------------------------------- Discussion 7---------------------------------------------------- Conclusion 8---------------------------------------------------- Bibliography 9---------------------------------------------------- Appendix A 0---------------------------------------------------- Appendix B 1---------------------------------------------------- Appendix B 2---------------------------------------------------- Appendix C 3---------------------------------------------------- Appendix C 4---------------------------------------------------- Appendix D 5---------------------------------------------------- Glossary Introduction The Nuclear bomb is a well known and greatly feared weapon. Its often categorized as a weapon of mass destruction, and appropriately named so after its detonation in Hiroshima, Japan on Monday, August 6, 1945. This bomb, named 'Little boy', instantly incinerated approximately 90,000-166,000 innocent Japanese lives. 2 Little boy was a uranium
The Physics of an Atomic Bomb
Nuclear Fission: Nuclear fission occurs when the nuclei of certain isotopes of very heavy elements, isotopes of uranium and plutonium capture neutrons. The nuclei of these isotopes are just barely stable and the addition of a small amount of energy to one by an outside neutron will cause it to promptly split into two roughly equal pieces, with the release of a great deal of energy (180 MeV of immediately available energy) and several new neutrons (an average of 2.52 for U-235, and 2.95 for Pu-239). If one neutron from each fission is captured and successfully produces fission then a self-sustaining chain reaction is produced. If more than one neutron from each fission triggers another fission, then the number of neutrons and the rate of energy production will increase exponentially with time. Two conditions must be met before fission can be used to create powerful explosions: ) The number of neutrons lost to fission (from non-fission producing neutron captures, or escape from the fissionable mass) must be kept low. 2) The speed with which the chain reaction proceeds must be very fast. A fission bomb is in a race with itself: to successfully fission most of the material in the bomb before it blows itself apart. The degree to which a bomb design succeeds in this race determines its efficiency. A poorly designed or malfunctioning bomb may "fizzle" and release only a tiny
See how the angle of a ramp affects the speed of a cylinder moving down it.
GCSE ramp experiment SECTION P: PLANNING > Aim: To see how the angle of a ramp affects the speed of a cylinder moving down it. > Preliminary Work I carried out some preliminary tests to see any problems, which could occur and anything, which could be improved. I first tried timing the cylinder with a stop watch timer, although this may be slightly inaccurate because of the result being reliant on the timers reactions, we felt this to be most efficient. By setting at 5° we got a result of 1.39s. The results of the experiment with the stopwatch are shown below. The weight of the cylinder in the set of results below is 198.18g. Here, we are testing how long the cylinder takes to reach the end of the ramp - i.e. not the time it takes to completely stop Preliminary Experiment Angle (°) Time 1 (s) Time 2 (s) Time 3 (s) Average (s) 5 .59 .42 .69 .50 0 0.98 0.91 .02 0.97 5 0.77 0.78 0.73 0.76 20 0.53 0.61 0.64 0.59 > After the 20° angle we found it was becoming difficult to time the cylinder and also to support the ramp. So we decided to change the range from 5°- 45° to a more suitable range of 3° - 30° and also to carry out the experiment 5 times instead of the 3 allowing us to get a better average. We had previously decided that all the cylinders should be rolled from a height of 30cm to begin with, although this could be used as a
Drayton Manor Theme Park: Centrepedial Force
Drayton Manor Theme Park. On the 20th October 2004 I visited the Drayton Manor theme park, the park having many exciting opportunities to explore the scientific principles of speed, energy and force. I have identified two aspects of physics relating to two different rides. st Aspect of physics - centripetal force on the ride Cyclone. (1) I get into my carriage, an attendant comes round and slides the door across, the first thing I notice about the inside is that there are no seat belts, this worried me as I had seen the ride in-action and did not want to fall about the carriage as the ride spins upside down. The ride began to spin round and build up speed and I felt as though I was about to fly out of my seat, as it got faster it began to lift off the ground and turn so that you were eventually vertical. When you were at the top of the circle the carriage was completely upside down, as shown in the picture below, I did not fall about the cage as I had thought but felt almost glued to the floor. I found it difficult to move my arms, legs and even to catch my breath. (1) The fact that I did not fall about the carriage as I had originally thought can be explained by a physics concept called centripetal force.2 Newton's first law of motion states that 'Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied
Helicopter Investigation
Contents Page Aim....................................................................................................................................................................................Page 2 Prediction...................................................................................................................................................................Page 2/3 Equipment.......................................................................................................................................................................Page 3 Method........................................................................................................................................................................Page 3/4 Results Table............................................................................................................................................................Page 4/5 Workings out for Averages..................................................................................................................................Page 5/6 Graphs/Conclusion..............................................................................................................................................Page 6/7/8
"Consider how the police are depicted in 'The Blue Lamp' and 'Billy Elliot'".
"Consider how the police are depicted in 'The Blue Lamp' and 'Billy Elliot'". I shall begin my essay by studying several scenes in the film 'Billy Elliot', which was made in 2000, directed by Stephen Daldry. The main focus of this particular film is the 1984 miners' strike, a defining point in British history. Billy Elliot is a young boy of age eleven. He lives in a small and confined north-eastern mining district, where the majority of workers are currently involved in a violent strike as a form of forceful protestation. Billy lives with his elderly grandmother, as well as his older brother Tony and his father who are both connected with their striking miners maintaining a picket line against the strike-breakers. The first significant shot in the film, providing us with our initial view of the police, consists of Billy discovering that his grandmother has strayed out of the house they share. He runs into the nearby field, eventually finding and coaxing his absent-minded grandmother to return home. The police force are visible on a road above the field. The camera shot is a 'long-shot', focusing on the force's high position and great number, and therefore making the officers seem superior. The police are shown here to be a nameless, unknown body. It seems as though the habitants of the district are used to, and have become familiar with, the seemingly strong force
Physic lab report - study the simple harmonic motion (SHM) of a simple pendulum and to investigate the phase relationship between the displacement, velocity and acceleration, and to investigate how acceleration is related to displacement in a simple harmo
Ivan Liu Chun Pok 6A(11) Group 8 Laboratory report: Studying a simple harmonic oscillation Objectives: To study the simple harmonic motion (SHM) of a simple pendulum and to investigate the phase relationship between the displacement, velocity and acceleration, and to investigate how acceleration is related to displacement in a simple harmonic motion. Apparatus: * half metre rule * a light string * pendulum bob * video camera with tripod stand * computer with Motion Video Analysis (MVA) software and Microsoft Excel installed Experimental design: Fig. 0 Theory: For an object or mass moving in a simple harmonic motion, the displacement, velocity and acceleration change periodically in both magnitude and direction. The acceleration in particular is always proportional to its displacement from the equilibrium position and must always be directed towards the equilibrium point. Mathematically it can be expressed as a = -kx, where k is a constant and x is the displacement from the equilibrium point. Also for a simple harmonic oscillation, the period or frequency of oscillation is independent of the amplitude of the motion. In Figure 1, x is the displacement of the pendulum bob from the equilibrium point Q. Points P and R are points where the maximum displacement (amplitude A) can be obtained. Theoretically, the following equations are true for S.H.M.: When
Science Coursework - Investigating How Mass Influences Distance Travelled When Firing A Margarine Tub.
Science Coursework - Investigating How Mass Influences Distance Travelled When Firing A Margarine Tub. Introduction Aim: I am going to investigate how far a margarine tub can travel when a force is applied. The possible variables for this experiment include: the force, mass and surface. These could all affect the distance travelled by a projected margarine tub. I have decided that I will change the mass of the tub (variable) but keep the force constant. I am going to use this variable as it is easier to make accurate than surface, which is difficult to give measurements to and force is sometimes unreliable as the only way for us to control the amount of force is with how far the elastic band is pulled back which is difficult to make accurate. Prediction/Hypothesis I think the higher the mass of the margarine tub; the less distance the tub will travel. "When a force moves an object, energy is transferred and work is done". In this experiment the movement indicates unbalanced forces, energy is transferred and wasted as friction. The frictional force is that force which only affects the speed of an object and not the direction. Friction is the force that happens when two things rub together. The effect of friction is usually to slow you down. With less friction, you can move more easily and as there is an increased amount of friction with higher masses of sand it makes it
The life and work of Isaac Newton Sir Isaac Newton has been considered one of the most outstanding scientists of all time.
The life and work of Isaac Newton Sir Isaac Newton has been considered one of the most outstanding scientists of all time. He has often been portrayed as a man who saw the world in absolutes and adopted an image of a scientist who after centuries of ignorance and superstition gave rise to a time of empirical science in a modern world. However various sources have personified Newton in a different light. There is evidence to suggest that Newton was a seeker of a synthesis of all knowledge and believed that there was a unified theory of the principles of the universe. It also suggests the he believed that this synthesis was once known to mankind. Newton spent his life looking for this combination of complex ideas not only through mathematics and physics but through the pursuit of alchemy, chronology, and theology, always seeking to include God in all his investigations. This essay will look at the journey of Newton's life, from his early years to his death, his discoveries through his life in mathematics and physics, his relationships and feuds with other scientists. It will also at how Newton's findings formed the basis of mathematics for the next three hundred years. In the seventeenth century, science was in its infancy. Many people, including educated people still believed in witchcraft and sorcery. Almost nothing was known about the fundamental principles behind