THE UNIVERSITY OF HONG KONG DEPARTMENT OF MECHANICAL ENGINEERING Part I APPLIED DYNAMICS LAB (full report required) DYNAMICS OF A TROLLEY ON RAILS Based on document MGS/ID137/203 by Dr MG Sainsbury Modified in Feb 2007 & Jan 2008 by Dr L Huang and Mr WS Sze 1. Objectives (1) To measure the velocity and acceleration of a trolley as it descends on inclined track and is stopped by a nonlinear elastic arrester system. (2) To compare the measured acceleration‚ velocity and displacement with theoretical
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whether the predicted behaviour based on our mathematical model of SHM was cohesive with the observed parameters in the experiment. We also used Hooke’s Law to measure the spring characteristic‚ k‚ spring constant‚ in order to model energy of SHM and determine if energy is conserved via transfer between potential and kinetic. Simple harmonic motion is a mathematical model for many forms periodic motion such as sound waves within a medium‚ a pendulum‚ and electrons in matter. French mathematician Jean
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develop a single energy concept. “So when the energy concept was developed it was important to distinguish it from caloric. In snuffing out the caloric concept‚ the clear picture of energy storage and transfer that it fostered was unnecessarily lost‚ too.” Even though we recognize that energy is not a physical substance‚ we choose to use the substance metaphor to describe it. We’ll use three principles to guide us in the development of the energy concept. 1. Energy can be viewed as a
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U. S. Government Unit 8 – U.S. Domestic Policy Climate Change Policy – Who Should Lead? All levels of government are actively involved in many scientific and technological issues‚ such as climate change and man’s role in the condition of our environment. In this activity you will research climate change and view some federal‚ state‚ and local policies‚ as well as initiatives for private business. You then will be asked to decide who would be most effective in taking the lead in creating and
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so soon‚ there are many things that can be done by everyone. The first thing that needs to be done is cut the amount of carbon dioxide by half the amount. This can be done by three ways. The first way is by conserving energy. Learning to use energy wisely can do energy conservation. Making smaller‚ more fuel-efficient cars
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The automated equipments which were originally used in the intelligent office buildings are being installed in the residential buildings and houses as well. The intelligent houses and the intelligent communities are taking shape. To reduce the energy consumption‚ the development of “green buildings” has become a
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PESTLE Analysis Political ITC faces stiff restrictions from the government on its tobacco business because of the nature of the product. Discriminatory central taxes are levied on the cigarettes. This has been worsened by the rise in VAT notwithstanding the fact that only 5.7% of all adults smoke cigarettes while almost 35% adults consume tobacco. The per- capita consumption of cigarettes in India is among the lowest in the world while tax per 1000 cigarettes as a percentage of per capita GDP
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Environmental Pollution Simulation Review and Summary Environmental Pollution Simulation Review and Summary In the simulation “Managing Environmental Concerns and Resources‚” the scenario took place in Eastern Europe‚ in a Casadonia city named Keywich. The main concern of Keywich’s City Council is the increasing population of the town and the negative effects it can have on the economy‚ environment‚ culture and society. In the past Keywich was a regular recipient of the Casadonia Greenbough
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the Analysis of Energy Efficiency Initiatives Luís Miguel Pires Neves School of Technology and Management‚ Politechnic Institute of Leiria; INESC Coimbra‚ Portugal António Gomes Martins Carlos Henggeler Antunes Department of Electrical Engineering‚ University of Coimbra; INESC Coimbra‚ Portugal 23rd December 2002 Running head: SSM to Rethink Energy Efficiency Keywords: Energy; Systems; Soft OR; Abstract This paper reflects an attempt to rethink the process of analysis of Energy Efficiency Initiatives
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environment. Green IT also strives to achieve economic viability and improved system performance and use‚ while abiding by our social and ethical responsibilities. Thus‚ green IT includes the dimensions of environmental sustainability‚ the economics of energy efficiency‚ and the total cost of ownership‚ which includes the cost of disposal and recycling. It is the study and practice of using computing resources efficiently." With increasing recognition that man-made greenhouse gas emissions are a major
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