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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magnitude of the force‚ d is the object’s displacement‚ and is the angle between the direction of the force and the displacement . Solving simple problems requires substituting values into this equation. More complex problems‚ such as those involving friction‚ often require using Newton’s second law to determine forces. Example: An Eskimo returning from a successful fishing trip pulls a sled loaded with salmon. The total mass of the sled and salmon is 50.0 kg‚ and the Eskimo exerts a force of 120
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How a Pogo Stick Works The pogo stick is a mechanical device that utilizes the spring’s ability to store energy. In this paper I will explain how the toy uses the laws of physics to provide hours of fun. There are a lot of forces acting on you and the pogo stick as you bounce along. We’ll take an in depth look at all of these forces and what part they play in the overall functioning of pogo sticks. The physical aspects can be broken down into sections to get a better understanding of what is going
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Chapter 2 Forging Subjects of interest • Introduction/objectives • Classification of forging processes - Hammer or drop forging - Press forging - Open-die forging - Closed-die forging • Calculation of forging loads • Effect of forging on microstructure • Residual stresses in forgings • Typical forging defects Suranaree University of Technology Tapany Udomphol Jan-Mar 2007 Objectives • This chapter provides fundamental of metal working process for forging in order to understand
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and opposite and equal force on the bottle which pushes the bottle up (3rd law)‚ and the larger that force is‚ the faster it will accelerate and move (2nd law). Eventually the rocket reaches a peak height because external forces (air friction/drag and gravity) act on it (1st law). Now talk about what happens if we add too much water. The mass of the bottle will increase‚ so it takes a larger force to make it accelerate and hence it won’t go as high as when we give
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mud is as a lubricant. While drilling process took place‚ there are lots of friction and heat been generated. So mud is needed in order to cool down the temperature and also to reduce the frictions. * The mud also will collect all the debris or the drilled cuttings from the wellbore and transport it to the surface. * The other function of drilling mud is to maintain the stability of the well in terms of friction and pressure. * If the pressure of the well is much higher compare to the
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This paper is to identify possible sources of intergenerational friction‚ and to describe how this differences could be managed in occupational setting. Today is the time when multiple generations are working side by side. Each generation has some distinctly different expectations and perceptions about what their working environment will provide and how they should behave as employees. Therefore‚ many organizations today are challenged by intergenerational issues they have never experience before
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11 FREQUENTLY ASKED QUESTIONS For any other study information see the brochure my Studies@Unisa. 9 SMI181Q/101/2013 12 CONCLUSION We hope that you will enjoy this module and wish you success 13 ADDENDUM ADDENDUM A: COMPULSORY ASSIGNMENTS FOR FIRST SEMESTER SEMESTER 1 Assignment 1 Due date: 08 March 2013 Assignment Unique number: 748509 (Students registered for the first semester only) Instruction In preparing for this assignment do not rely only on the study guide. This assignment
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car forwards. As the car rolls it loses energy but as “The Law of Conservation of Energy states that energy cannot be created or destroyed‚ just transformed from one form to another.” This energy has to go somewhere. In this case it is lost through friction between
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Kinetic Friction Objectives:- * Use a Dual-Range Force Sensor to measure the force of static friction. * Determine the relationship between force of static friction and the weight of an object. * Measure the coefficients of static and kinetic friction for a particular block and track. * Use a Motion Detector to independently measure the coefficient of kinetic friction and compare it to the previously measured value. * Determine if the coefficient of kinetic friction depends on
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