Modulus (ET) Steel (304L) 197Gpa 0.3 0.312Gpa 10Gpa Aluminum (1435) 69.5Gpa 0.3 0.13GPa 0.1Gpa Coulomb Friction The coulomb friction mode1 assumes that there is a tangential force applied along the tool-work piece interface proportional to the normal force as described by the equation F_t=-μf_n t …………(3-33) Where Ft is the tangential force‚ μ is the coefficient of friction‚ fn is the normal reaction force and t is
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Contents Cover Page I Certificate II Acknowledgements III Abstract IV List of Figures 2 1. Introduction 3 1.1 Braking Theory 4 1.1.1 Braking Force 4 1.1.2 Braking Distribution 4 2. Regenerative Braking System 8 2.1. Necessity Of RBS................................................................................................8 2.2. Detail Study of Concept of RBS 10 2.3. Working Of standard RBS 14 2.4. Elements Of the System 15 2.5. Different
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the top of the 1st hill with the speed of 32.9 m/s Energy= 800156 J P= E/T = 800156J/40s = 200003.9 W b) E1-Wf =E2 The expected speed of the cars is 8.5 m/s. Friction did 608000 J of work on the cars from the top of the hill to the braking zone. The expected speed of the cars is 8.5 m/s. Friction did 608000 J of work on the cars from the top of the hill to the braking zone. Eg+Ek-Wf= Eg1+Ek1 mgh+1/2mv2-Wf= mgh1+1/2mv21 Wf= mgh+1/2mv2- mgh1-1/2mv21 = (9.8)(65)+1/2(2
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conservative if the net work done by the force on an object moving around any closed path is zero. Copyright © 2009 Pearson Education‚ Inc. 8-1 Conservative and Nonconservative Forces If friction is present‚ the work done depends not only on the starting and ending points‚ but also on the path taken. Friction is called a nonconservative force. Copyright © 2009 Pearson Education‚ Inc. 8-1 Conservative and Nonconservative Forces Potential energy can only be defined for conservative forces
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Newton’s Laws Name: Inertia and Mass Read from Lesson 1 of the Newton’s Laws chapter at The Physics Classroom: http://www.physicsclassroom.com/Class/newtlaws/u2l1a.html http://www.physicsclassroom.com/Class/newtlaws/u2l1b.html MOP Connection: Newton’s Laws: sublevel 1 1. Inertia is 2. The amount of inertia possessed by an object is dependent solely upon its __________. 3. Two bricks are resting on edge of the lab table. Shirley Sheshort stands on her toes and spots
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ENC 1101 28 March 2012 Friction in Relationships All relationships come down to one person connecting with another on an intimate level. How that connection is made and maintained determines the strength or weakness of the bond. For instance‚ a couple that has recently moved in together for the first time will have a lot of factors that can cause friction. Different religious beliefs‚ work ethics‚ and family relationships are among the issues that a couple must deal with in order to thrive
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Experiment title: conservation of mechanical energy Section: 8 Name: Ahmed Atari University ID: 201103848 Instructor: Ahmed Zainelabdin Submission date: May 1‚ 2014 Objective: the purpose of this lab is to investigate the law of conservation of energy. This can be achieved by measuring both potential and kinetic energy through the experiment conducted. Back ground: Kinetic energy is said to be the energy of motion. Kinetic
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acceleration of the cart can be calculated‚ if the friction and air resistance are considered to be negligible‚ by this formula: Where is the angle between the track and the (horizontal) table. The graph should resemble a straight line since and are constant and but in real practice this doesn’t happen because of the effect of friction on the cart. This can be explained like this: while the cart is going upwards‚ gravity is helped by friction to slow down the cart faster‚ thus (the acceleration
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with minimum friction. A motion sensor will be used to measure various aspects of vector quantities. Description: An Air Track is positioned along the edge of the table. It is a long straight metal beam with many small holes that are roughly each 2mm in diameter. It is positioned at an angle to allow the gliders to glide down the slope. A blower pump is placed under the table‚ and it is connected to the beam‚ which allows air to blow out from the holes to reduce the friction of a moving
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braking technology has reached a new peak. In this project electricity is applied to the coil at the time of braking. This develops a magnetic field around it and the rotating armature gets attracted towards the coil. As a result the inner and outer friction plates placed between the armature and the coil gets squeezed‚ which develops a torque and eventually the vehicle comes to rest. Further researches and studies on the braking system shows that in future‚ electromagnetic braking system can be used
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