basket to determine launch angle. The majority of our procedure was based on the effect of the trebuchet‚ and being able to correct any deficiencies. Analytical Procedure A trebuchet works by converting stored potential energy into kinetic energy. It accomplishes this by establishing
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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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or in your pockets. (9) Hand in the answer sheet separately. Only the answer sheet will be graded. Formula and constants: acceleration due to gravity = 9.80 m/s2 1 1. In the figure‚ when m slides down from M‚ which direction is the friction force on M by m? (a) Left (b) Right (c) Direction A (d) Opposite to direction A (e) No enough information to decide. m A M θ 2. A child pulls on a toy car with a horizontal force of 75 N. If the toy car moves horizontally a total
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1 Introduction ANSWERS TO MULTIPLE CHOICE QUESTIONS 1. Using a calculator to multiply the length by the width gives a raw answer of 6783 m 2 ‚ but this answer must be rounded to contain the same number of significant figures as the least accurate factor in the product. The least accurate factor is the length‚ which contains either 2 or 3 significant figures‚ depending on whether the trailing zero is significant or is being used only to locate the decimal point. Assuming the length contains 3 significant
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continues moving until affected by another force. 3. Potential Energy-The energy that a body or system has stored because of its position 4. Kinetic Energy- The energy a body or system has because it is moving. 5. Friction- Resistance encountered by a moving object in contact with another object. 6. Traction-The adhesive friction between a moving object and the surface on which it is moving. Module 4 – Signs‚ Signals & Pavement Markings 1. Explain the purpose of the following
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Centripetal force From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Not to be confused with Centrifugal force. This article contains many unreferenced sections and needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (January 2011) Roller coaster cars are forced through a loop by the track applying a centripetal force on them. A reactive centrifugal force
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SEMINAR REPORT ON [pic] SUBMITTED BY: - [pic] Stopping safely is one of the most important functions a motor vehicle has to perform. Failure of the brake system will almost invariably result in property damage‚ personal injury‚ or even death. Consequently‚ a great deal of consideration has been given to improving the brake system in trucks and passenger cars over the last nine decades. One of the latest improvements is an antilock brake
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chain lift method consists of chain dogs (hooks) that hook onto a long length of chain or chains that are used to lift the coaster to its highest peak. As the coaster goes up the lift hill‚ it is building potential energy that will be turned into kinetic energy on the way back down. Another method of launch is the catapult launch that builds up an abundance of potential energy without using a lift hill to build potential energy. There are many types of catapult launches. An example of a catapult launch
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INTRODUCTION TO AERONAUTICS: A DESIGN PERSPECTIVE CHAPTER 3: AERODYNAMICS AND AIRFOILS “Isn’t it astonishing that all these secrets have been preserved for so many years just so that we could discover them!!” Orville Wright 3.1 DESIGN MOTIVATION The Physics of Aerodynamic Forces Figure 3.1 shows a cross section view of an aircraft wing. A wing cross section like this is called an airfoil. Lines drawn above and below the airfoil indicate how the air flows around it. The
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supplementary retardation equipment in addition to the regular friction brakes on heavy vehicles. We outline the general principles of regular brakes and several alternative retardation techniques in this section. The working principle and characteristics of electromagnetic brakes are then highlighted. 2.2. General Principle of Brake System The principle of braking in road vehicles involves the conversion of kinetic energy into thermal energy (heat). When stepping on the
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