ENGR 210 - Statics Tutorial 1 Your Name: Partner’s Names: Section:_____________ _______________________ _________________ _________________ _________________ _________________ _________________ _________________ VECTORS This assignment will introduce the use of the Cartesian Coordinate System‚ vector notation‚ and properties of vectors to find corresponding unit vectors and resultant forces. The dot product will also be introduced. Each group will choose the origin of a coordinate system in
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Engineering Mechanics - Statics Chapter 1 Problem 1-1 Represent each of the following combinations of units in the correct SI form using an appropriate prefix: (a) m/ms (b) μkm (c) ks/mg (d) km⋅ μN Units Used: μN = 10 −6 N km μkm = 10 9 −6 Gs = 10 s ks = 10 s mN = 10 ms = 10 Solution: ( a) m 3m = 1 × 10 ms s m km =1 ms s ( b) μkm = 1 × 10 μkm = 1 mm ( c) ks 9 s = 1 × 10 mg kg ks Gs =1 mg kg ( d) km⋅ μN = 1 × 10 −3 −3 −3 3 N s −3 m mN km⋅ μN = 1 mm⋅ N 1 ©
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Friction Friction – It is an opposing force that acts between surfaces in contact moving with respect to each other. It always opposes relative motion between two surfaces. Cause of friction - Friction is cause by the irregularities on the two surfaces in contact. We are able to walk because of the force of friction Nature of surfaces – Smooth surfaces: less friction‚ Rough surfaces: greater friction How hard an object is pressed – Greater pressing force: Greater friction Mass of object
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Electrostatic Field • An electrostatic field is a phenomenon that is very similar to a magnetic field. When an object is electrically charged‚ it creates an electrostatic field. If an object has an excess of electrons‚ then it’s considered to have a negative charge. If an object has fewer electrons than its surrounding environment‚ though‚ it’s considered to be positively charged. Just like with magnetic fields‚ two objects that are oppositely charged will attract each other. This scientific
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Hypothesis: For an increase in a normal force‚ there will be a corresponding increase in friction. Introduction: Force is usually connected with a push or pull exerted on an object. In this experiment‚ I am using a contact force‚ a force that exists from physical contact between two things. I am pulling the spring scale‚ which measure force in Newtons (kg x m/s2)‚ and then the block is moving. Different masses (kg)‚ or the measure of the resistance of an object to changes in its motion due
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Without friction the world would be very different! It would be so strange in a bad and good way..... For a start‚ walking would be different because when you put your weight on the foot behind you there would be nothing to stop it sliding. You would fall over and not be able to walk. It would be very hard to get around. You could consider blowing yourself around but it still wouldn’t work. Taking in a breath‚ you would slide forward and then blowing out‚ you would slide backward! Having no friction
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about us and how we identify ourselves‚ throughout the experiences we face in our lives. Identity formation is defined as the combination of personal‚ social and cultural experiences that combine to form an individual’s identity. Identity is not static‚ and never will be; it is the result of continuous interaction with the environment. People in our lives such as friends‚ family‚ teachers and idols affect the way we identify ourselves; they are a big factor in building our personality. Past experiences
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FLUID FRICTION MEASUREMENTS YEDITEPE UNIVERSITY DEPARTMENT OF MECHANICAL ENGINEERING 1 YEDITEPE UNIVERSITY ENGINEERING FACULTY MECHANICAL ENGINEERING LABORATORY Fluid Friction Measurements 1. Objective: Ø To determine the head loss. Ø To determine the head loss associated with flow of water through standard fittings used in plumbing installations. Ø To determine the relationship between friction coefficient and Reynolds’ number for flow of water through a pipe having a roughened bore
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F3.3 – LIMITING FACTORS • a factor that causes popn growth to decrease • two basic types: 1. density-independent factors 2. density-dependent factors 1. Density-independent factors • an abiotic event that affects all popn’s in the same way‚ regardless of popn density • e.g. fires‚ earthquakes‚ storms‚ temperature extremes… 2. Density-dependent Factors • a biotic interaction that varies in its effect on popn size‚ depending on the density of the popn involved • have greater impact on denser popn’s
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MECHANICAL ENGINEERING SCIENCE 5 October 19‚ 13 Heriot watt university Dubai Campus Lab Report: Pipe Friction MODULE LEADER: Dr. MEHDI NAZARINIA 1. Introduction The flow of fluid in a pipe under pressure is used to reach many goals. A good knowledge of the fluid flow and pipe pressure at some point along the path of the pipe may facilitate
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