Coefficients of Friction Discussion: Friction is the force that resists motion and can be determined in either static situations or kinetic situations using the following equation: [pic] Static friction is the amount of friction that resists the start of motion and kinetic friction resists an object’s continued motion. The coefficient of friction depends on a number of factors including surface area and the types of surfaces in contact. The only way to determine a coefficient of friction is experimentally
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Coefficient of Friction- Post Lab Abstract The purpose of the experiment was to determine to coefficient of friction on a block sliding across a horizontal plane‚ and on the same block sliding down an inclined plane. This was done by first testing block‚ and how much weight on a string was needed to move the block at a constant velocity using a pulley system. The block weighed 0.2385 kilograms‚ and needed a hanging mass of 0.05 kg to move at a constant velocity. This means the coefficient of
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consisting of liquid bio-oil‚ solid biochar‚ and pyrolytic gas. It is derived from the complex conversion network of the three main components in biomass: cellulose‚ hemicellullose and lignin (Kan et al.‚ 2016). Degradation Characteristics of A. magnium wood The purpose of this research is to determine the main points of A. magnium thermal degradation‚ based on DTG data. The data of the thermal stability of biomass was analysed. The time derivative of the mass fraction and derivative second of the mass
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Experiment 4: Friction Laboratory Report Anna Rucelli Ignacio Michael Giorgio Lapus Ted William Lardizabal Janell Leica Lee Department of Occupational Therapy College of Reabilitation Sciences‚ University of Santo Tomas España‚ Manila Philippines Abstract The experiment verifies the laws of friction with the use of a spring scale‚ a block of wood‚ its different surfaces and the different surfaces of other objects. Another part of the experiment uses the palms of the hands to produce
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experiment is to study the friction loss along a pipe. In this experiment‚ water and mercury have been used to demonstrate the law of resistance with different types of flow which are laminar and turbulent flow. The variation of head loss will be obtained and hence determined the Reynold numbers and friction factor. In the end of the experiment‚ the law of resistance which is the relationship between i and u will be determined and hence established the critical R and friction factor. 1.0 Introduction
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Static Friction INTRODUCTION When an object is placed on a surface it will remain static unless the resolved component of the force due to gravity acting parallel to the surface exceeds the friction force associated with the static coefficient of friction between surfaces by placing various objects on a surface and tilting the surface until the object begins to slip. By measuring the angle at which the object begins to slip‚ it is then possible to calculate the coefficient of friction between
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Collazo 1 Asia Lee Collazo English Comp. I Professor J. Mohan February 14‚ 2013 “False Appearance’s” We are confronted with many different images of others. These false images can either be externally imposed or internally fabricated. In either case‚ one must have the courage to look through this ignorance so that ones true self can be exposed. After reading Mirrors it was obvious that‚ Lucy Grealy cared what others thought about her physical appearance. In time‚ however
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Pipe Friction Summary The purpose of this lab is to find the friction factor and Reynolds number for laminar and turbulent flow and also for values in the critical zone. Results were taken recorded and used to calculate the friction factor and Reynolds number. They were then compared with the Moody diagram. Aim This lab could be used in industry when dealing with a pipe line containing any type of liquid to calculate the Reynolds number and friction factor. It would also help in pipe
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ENC1102 SUMMER II 2013 FICTION EXAM Choose the best answer that completes each statement. There is only ONE correct answer for each. Please mark your answers clearly by highlighting your answer. Each multiple choice question is worth one point. 1.) How did Miss Emily‚ in “A Rose for Emily” react when the town’s ladies called to offer condolences on her father’s death? A.) Met them at the door with a horsewhip B.) She begged them for financial help C.) She insisted
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Buoyant Forces The purpose of this lab is to calculate buoyant forces of objects submerged in water. The first step in the lab was to measure the mass of a metal cylinder‚ which was found to be 100g‚ and then to calculated it’s weight‚ which was .98 newtons. Then next step was to measure the apparent weight of the cylinder when it is completely submerged in a bath of water using the formula Wa=ma*g ‚ this was found to be 88.5grams. Knowing these two numbers‚ the buoyant force that the water
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