...Technology in Mechanics Nowadays, there has been a significant advancement of technology in mechanics. These advancement made it possible for human being to walk on Moon (kurianjoseph1, 2013). This feature, in turn had created a fact as the powerful of technology.Various technologies surrounding us are helping people to improve their life with more luxury. So the using of technology in mechanics impacts to us positively. There are one cause and two effects why the technology is using. Mechanics is the basis of early and modern technology. According to a study by (B.Cotterell & J.Kamminga, 1992), the advancement of technology in mechanics plays a fundamental role in the study of material culture. In simple term, mechanics can explain how artifacts operate technologically and how efficient or the effective they are. For example, a cooling system is a technology in a mechanics. In relation to this, (V.A.W.Hillier, 2004) stated that the function of cooling system is to remove heat from the mechanics’ engine for keeping their temperature within safe limits and avoid any problems. With the engine combustion reaching extremely high temperature, the heat needs to be dissipated. A cooling system is essential to prevent the engine from burning. Another function of the cooling system is to regulate the temperature inside the passenger compartment and ensure the passengers’ comfort. So, it can be seem that the use of technology in mechanics has become an...
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...Quantum mechanics Rohan Agarwal It is common knowledge that matter is comprised of particles. Or is it? We all think that light consists of waves. How true are these claims? Although it may seem counterintuitive on the surface, various experiments and supporting theories have proved that the line between what is particulate and what is wavelike is finer than we imagine. At a fundamental, sub-atomic level, matter and light are both wavelike and particulate; it is only on the macroscopic scale that the divisions become better defined. The study of the physical laws that govern the realm of the very small, such as atoms, protons, and the like; developed from Planck’s quantum principle and Heisenberg’s uncertainty principle are termed as quantum mechanics. The principles of quantum mechanics revolve around two major theories- the wave-particle duality, and, in extension to this, the theory that it is possible for absolutely small particles to be in two different states at the same time. Theoretical physicists have arrived at these conclusions after powerful observations of experiments, and these will be discussed in due course. Before doing so, it is imperative to understand that this quantum strangeness does not transfer to the macroscopic world, and so some claims in this article will seem absurd. In order to demonstrate this, Erwin Schrodinger published a paper in 1935, containing a thought experiment, now popularly known as Schrodinger’s cat. A cat is put in a steel chamber...
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...SRI SHANMUGHA COLLEGE OF ENGINEERING AND TECHNOLOGY Pullipalayam,Morur(P.O),Sankari(T.k),Salem(D.T). Two Mark Questions Unit I – Basics 1. What is meant by mechanics? Mechanics is a branch of physical science which deals with the study of a body or bodies such as machines and structures at rest or in motion subjected to external mechanical disturbances such as forces, moments etc. What is meant by Engineering mechanics? Application of the principles of science of mechanics to the practical engineering problems is known as Engineering Mechanics. State the different types of mechanics? Depending upon the nature of the body involved, Mechanics can be classified into two types * Mechanics of Solids * Mechanics of Fluids Define Statics The study of a body which is in motion is known as statics Define Dynamics. The study of a body which is in motion is known as dynamics. Define Kinematics. It is the branch of dynamics which deals with the relationship between displacement, velocity, acceleration and time of a given motion, without considering the forces that cause the motion. Define Kinetics It is the branch of dynamics which deals with the relationship between the forces acting on a body, the mass of the body and the motion of the body. What do you understand from the concept of “Law of dimensional homogeneity”? Law of dimensional homogeneity states that “basic equation representing physical phenomenon must be valid for all systems of units”. State Parallelogram law. It states that...
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...The passion that I am going to talking about is being an auto mechanic and all of the things that come along with being an auto mechanic. Being an auto mechanic is not a job for everyone, but I believe it is the right job for me. Being an auto mechanic requires many different things including having a wide range of tools, extensive knowledge about the automobiles and the to work on them everyday. One of the most important purchases for a mechanic is his tools. One of the requirements for just about every auto mechanic job is that you bring your own tools. The reason for this is that while mechanics are trusted to work on vehicles, If a shop provided them tools to do work there would be no guarantee that the tools would be put back where in...
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...Fluid Mechanics Learning Objectives Outcomes • Explain the pressure-depth relationship. Pressure increases with depth. • Define Pascal’s Principle. Pascal's Principle states that the pressure is transmitted evenly through a liquid. • Describe how to use Pascal’s Principle in practical application. When you inflate a balloon with air, it expands evenly in all directions, this is an example. • Describe Archimedes Principle. States that the mass of a liquid displaced by a floating body is equal to the mass of that body. • Determine if an object will float in a fluid based on its relative densities. So if you fill a tumbler up with water to the brim, put an object into it, weigh the water that has been pushed out of the tumbler, and compare that with the weight of the object, you'll know whether it floats or not. • Use the continuity equation and Bernoulli’s equation to explain common effects of ideal fluid flow. The pressure in a fluid moving steadily without friction or outside energy input decreases when the fluid velocity increases Assignment Requirements 3. Mass is the same, so if the whale is taking up less volume, the density must have increased. The whale has displaced a greater mass of water at the depth, so the buoyant force is greater. 20. Ice cubes float in water, and sink in alcohol. Anything with less density than the liquid that it's in will float. 22. It will increase 35. It would be harder on the top of a mountain because the pressure of the atmosphere...
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...Diesel Mechanic Becoming a diesel mechanic is an extremely rare and overlooked career path. Not everyone is cut out to be a diesel mechanic; it is a very dirty, hands-on job. However, it does not require any standard curriculum knowledge. It is simply the understanding of an intricate diesel engine. Being a diesel mechanic is a rewarding career that is a vital part of maintaining much of America’s transport. Diesel mechanics work on the diesel engine, the workhorse that powers larger vehicles. Diesel mechanics are also referred to as diesel service technicians or diesel engine specialists. They follow a routine maintenance checklist which involves the inspection of braking systems, steering mechanisms, wheel bearings, and other significant...
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...12.2 RrcrrLrrueaR Krrueuerrcs: Corurrruuous 15 MorroN It is highly suggested that you test yourself on the solutions to these examples, by covering them over and then trying to think about which equations of kinematics must be used and how they are applied in order to determine the unknowns. Then before solving any of the problems, try and solve some of the Fundamental Problems given below. The solutions and answers to all these problems are given in the back of the book. Doing this throughout the book will help immensely in understanding how to apply the theory, and thereby develop your problem-solving skills. Fa2-1. Initially, the car travels along a straight road with a speed of 35 m/s. If the brakes are applied and the speed of the car is reduced to 10 m/s in 15 s, determine the constant deceleration of the car. F12-5. The position of the particle is given by s : Q? - 8/ + 6) m, where r is in seconds. Determine the time when the velocity of the particle is zero, and the total distance traveled by the particle when r : 3 s. ,t,t.tO F7Z-1 Fl2-5 Fa2-2. A ball is thrown vertically upward with a speed of l5 m/s. Determine the time of flight when it returns to its original position. Fl2-6. A particle travels along a straight line with an acceleration of ,, : (10 - 0.2s) m/s2, where s is measured in meters. Determine the velocity of the particle when s: lOmif u:5m/sats:0. 6 _s 1' F12-6 Ftz-z Fl2-7. A particle FI2-3. A particle travels along a straight line...
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...Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second compensation package offered to Dunlap well structured? Was the second...
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...02 Solutions 46060 5/6/10 1:45 PM Page 1 © 2010 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher. 2–1. An air-filled rubber ball has a diameter of 6 in. If the air pressure within it is increased until the ball’s diameter becomes 7 in., determine the average normal strain in the rubber. d0 = 6 in. d = 7 in. e = pd - pd0 7 - 6 = = 0.167 in./in. pd0 6 Ans. 2–2. A thin strip of rubber has an unstretched length of 15 in. If it is stretched around a pipe having an outer diameter of 5 in., determine the average normal strain in the strip. L0 = 15 in. L = p(5 in.) e = L - L0 5p - 15 = = 0.0472 in.>in. L0 15 Ans. 2–3. The rigid beam is supported by a pin at A and wires BD and CE. If the load P on the beam causes the end C to be displaced 10 mm downward, determine the normal strain developed in wires CE and BD. D E 4m P ¢LBD ¢LCE = 3 7 ¢LBD = eCE 3 (10) = 4.286 mm 7 ¢LCE 10 = = = 0.00250 mm>mm L 4000 ¢LBD 4.286 = = 0.00107 mm>mm L 4000 A B C 3m 2m 2m Ans. Ans. eBD = 1 02 Solutions 46060 5/6/10 1:45 PM Page 2 © 2010 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may...
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...Quantum mechanics is an area of physics dealing with phenomena where the action is of the order of the Planck constant. The Planck constant is a very tiny amount and so this domain of physics is typically on the distance and momentum scale of atoms and elementary particles in general. Action is a general physical concept related to dynamics and is most easily recognized in the form of angular momentum. The most tangible way of expressing the essence of quantum mechanics is that we live in a universe of quantized angular momentum and the Planck constant is the quantum. A tangible result of the quantization of angular momentum is the existence of discrete electron orbitals, each with a principal quantum number and each orbital with an associated angular momentum that is an integer multiple of the Planck constant. Quantum mechanics has many implications on the microscopic scale, some of which are obscure and even counter intuitive. Classical physics explains matter and energy at the macroscopic level of the scale familiar to human experience, including the behavior of astronomical bodies. It remains the key to measurement for much of modern science and technology. On the other hand, at the end of the 19th century scientists discovered phenomena in both the large (macro) and the small (micro) worlds that classical physics could not explain. Coming to terms with these limitations led to the development of quantum mechanics, a major revolution in physics. This article describes how...
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...UNIVERSITI TUNKU ABDUL RAHMAN |Centre |: Centre for Foundation Studies (CFS) |Unit Code |: FHSC1014 | |Course |: Foundation in Science |Unit Title |: Mechanics | |Year/ Trimester |: Year 1 / Trimester 2 & 3 |Lecturer |: Kevin Chin | |Session |: 201605 | | | Additional Tutorial 4: Work and Energy. 1. A push of 120 N is applied along the handle of a lawn mower producing a horizontal displacement of 14.0 m. If the handle makes an angle of 30.0o with the ground, what work was done by the 120 N force? [1.45×103 J] 2. A box of mass 5.0 kg is accelerated by a force across a floor at a rate of 2.0 m/s2 for 7.0 s. Find the net work done on the box. [490 J] 3. What is the minimum work needed to push a 950-kg car 810 m up along a 9.0º incline? (a) Ignore friction. (b) Assume the effective coefficient of friction retarding the car is 0.25. [(a) 1.2×106 J, (b) 3.0×106 J] 4. The net force exerted on a particle acts in the +x direction. Its magnitude increases linearly from zero at x = 0 to 24.0 N at x = 3.0 m. It remains constant at 24.0 N from x = 3.0 m to x = 8.0 m and then decreases linearly to zero at...
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...SOIL MECHANICS QUIZ NO.1 SOLUTION 1. Determine the void ratio of the soil in percent. γm=G+Se1+eγw Alternative 1 Use 105.73 and 50 105.73lbft3=G+0.5e1+e(62.4lbft3) G=105.73+74.53e62.4 Substitute to 112.67lbft3=G+0.75e1+e(62.4lbft3) Then 112.67lbft3=105.73+74.53e62.4+0.75e1+e(62.4lbft3) SHIFT + SOLVE e=0.8013856813 in percent: 80.14% Alternative 2 Use 112.67 and 75 112.67lbft3=G+0.75e1+e(62.4lbft3) G=112.67+65.87e62.4 Substitute to 105.73lbft3=G+0.5e1+e(62.4lbft3) Then 105.73lbft3=112.67+65.87e62.4+0.5e1+e62.4lbft3 SHIFT + SOLVE e=0.8013856813 in percent: 80.14% NOTE: Rounding of values to nearest hundredths is permissible only in your final answer. It must be avoided in the computation. (e.g. 1.81) 2. Determine the specific gravity of the soil solids. Alternative 1 G=105.73+74.53e62.4 G=2.651558891 or 2.65 Alternative 2 G=112.67+65.87e62.4 G=2.651558891 or 2.65 3. Determine the porosity of the soil in percent. n=e1+ex100=0.80141.8014x100=44.49% n=44.49% 4-7. Noted that the container is filled with water. Therefore Vv=Vw Total weight of soil mass (Wt): 0.0174g or 1.74x10^-5 kg Weight of sample (Ws): 0.014g or 1.4x10^-5 kg Weight of water (Ww) = Wt-Ws= 0.0034g or 3.4x10^-6kg x 9.81m/s^2 = 3.3354x10^-5 N or 3.3354x10^-8kN γ=WV VV=3.3354x10-8kN9.81kNm3 If Vv=Vw Vw=3.4x10-9m3 Total Volume (Vt): 0.089cm3 or 8.9x10^-9m3 Volume of solids (Vs): Vt-Vw= 5.5 x 10^-9 m3 e=VvVs=0.62 n=e1+e=0.621.62=0.38 ...
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...UNIVERSITI TUNKU ABDUL RAHMAN CentreCourseYear/ Trimester | : Centre for Foundation Studies (CFS): Foundation in Science: Year 1 / Trimester 1 | Session Course CodeCourse Title | : 201605: FHSC1014: Mechanics | Tutorial 1: Introduction 1. What are the dimensions for the physical quantity expressed as , where m, g, d, T and l are the mass, acceleration due to gravity, distance, period and length respectively. A MT2 B ML2 C MLT2 D MLT–2 [Answer: B] 2. Suppose A = BC, where A has the dimension LM–1 and C has the dimension LT–1. What is the dimension of B? A TM–1 B L2T–1M–1 C TML–2 D L2TM–1 [Answer: A] 3. (a) State the dimension for (i) velocity (ii) force (b) Suppose an equation related with force F, viscosity ƞ, speed v, radius r is given by this formula , where k is a dimensionless constant; x, y, and z are the power to which ƞ, v and r. Given that the dimensions of viscosity ƞ is ML–1T–1. Use dimensional analysis to determine the value of x, y and z. [Answer: (a) (i) LT–1, (ii) MLT–2; (b) 1, 1, 1] 4. (a) Discuss briefly whether in general the method of dimensional checking can positively confirm that an equation is correct. (b) Newton’s law of universal gravitation is represented by where F is the gravitational force, M and m are masses, and r is a length. Given that the dimensions of force is MLT–2. What are the dimensions and SI unit of the proportionality...
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...UNIVERSITI TUNKU ABDUL RAHMAN |Centre |: Centre for Foundation Studies (CFS) |Unit Code |: FHSC1014 | |Course |: Foundation in Science |Unit Title |: Mechanics | |Year/ Trimester |: Year 1 / Trimester 1 |Lecturer | | |Session |: 201605 | | | Additional Tutorial 2: Vector and translational kinematics. 1. Find the x and y-components of: (a) a displacement of 200 km, at 30.0o. (b) a velocity of 40.0 km/h, at 120o; and (c) a force of 50.0 N at 330o. [(a) 173 km, 100 km, (b) -20.0 km/h, +34.6 km/h, (c) 43.3 N, -25.0 N] 2. Three forces are applied to an object, as indicated in the drawing. Force [pic] has a magnitude of 21.0 Newton (21.0 N) and is directed 30.0° to the left of the + y axis. Force [pic] has a magnitude of 15.0 N and points along the + x axis. What must be the magnitude and direction (specified by the angle ( in the drawing) of the third force [pic] such that the vector sum of the three forces is 0 N? [18.7 N, 76o] 3. A 200 N block rests on a 30o inclined plane as shown in figure below. If the weight of the block acts vertically downward, what are the components of the...
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...[pic] ASSIGNMENT – 35% The Issue Analysis assignment for this subject is divided into two parts which are (1) Issue Analysis and (2) Group Presentation. |TASK 1- Issue Analysis - (20%) | In your LECTURE class: 1. Get into groups of 4-5 students. 2. Each group is to choose a theme (e.g. Petroleum). This theme has to be agreed by all group members before given to the lecturer. Lecturer is required to approve your theme before you can finalize it. 3. If your group could not decide on a theme, the lecturer will provide a list of themes for your choosing. 4. Themes are chosen on first-come-first-serve basis. 5. NO two groups in one lecture may choose a common theme. 6. Then, decide the genre/angle/aspect of the theme which you are going to use to compose your essay and discuss with your lecturer and seek approval. - E.g. Let’s say that the theme of your group is ‘Petroleum’. You are then required to choose either to write a problem-solution essay or a cause-effect essay based on the theme chosen i.e. - Problem of petroleum on economy. - Solution to implement subsidy. - Solution to reduce vehicle usage. 7. Seek external references for your essay (magazine articles, newspaper articles, journals, and credible websites) as sources for your essay. 8. Collect a MINIMUM OF 5 sources for your essay and these sources MUST...
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