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Macro Mechanics

The first chapter “Introduction” provides detailed overview of the book content. The author discusses the scope of the book, its goals and objectives, and special attention is paid to chapters’ content. David Ashby, the author of the book, argues that the key task of economy is “to coordinate the kinds and quantities of goods and services produced with the kinds and quantities that buyers want”. (p. 1) Central government planning is assumed to deal with coordination among monetary capacity and demand for output, whereas the book’s goal is to present how this process is being accomplished in market-oriented economy and in private enterprises. Ashby stresses that, for example, in the USA coordination process is automatic process meaning it doesn’t need…

Ferris Wheel

I. INTRODUCTION In this group project, we’ve decided to use a Ferris Wheel as an object to represent Uniform Circular Motion. A Ferris is a non-building structure consisting of a rotating upright wheel with passenger cars attached to the rim in such a way that as the wheel turns, the cars are kept upright, usually by gravity. Some of the largest and most modern Ferris wheels have cars mounted on the outside of the rim, and electric motors to independently rotate each car to keep it upright. These wheels are sometimes referred to as observation wheels, and their cars referred to as capsules, however these alternative names are also sometimes used for wheels with conventional gravity-oriented cars. The original Ferris…

How gravity works

“Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is the attraction that exists between all objects”. (NASA gravity 2000) Gravity is a very essential part of life on earth. We are in the exact position in the sun’s gravitational field to keep us in orbit and keep life ongoing on our planet. Gravity is a downward force on any body of mass, the larger the mass of the body, the stronger the gravitational force. On earth the force is 9.8 N/Kg (Newton’s per Kilogram) roughly, depending on where you are on earth. Gravitation The original idea of gravity…

Trifilar Suspension

Introduction The moment of inertia I is a measure of the resistance of a body to angular acceleration [1]. An important factor as the resulting moment governs the analysis of rotational dynamics with an equation of the form M=I∝ which defines a relationship between several properties including angular acceleration and torque [2]. The polar moment of inertia is the measure of a body’s resistance to torsion and is used to calculate the angular displacement and periodic time of the body under simple harmonic motion [3]. The moment of inertia of any mechanical component that will encounter rotational motion must be analysed as part of the design phase. From the complex assembly of a steam turbine to the simplicity of a…

Better to convince people than to force them

It is better to convince people than to force them: DISAGREE/ Agree I would like to talk to you about today the topic “convincing people is better forcing them” and I am against this saying no forcing people is better but I also agree and saying that convincing Is better, please don’t get confused because in some cases it is truly better to force people but in some other cases it is better to convince all depending on the situation. There are a few ways to prove this point. One, forcing someone to do something is quicker and more efficient. There is also a term “fake it till you make it”. Convincing people might make it slower and waste time…

Moment of Inertia

Abstract The moment of inertia, or also known as the rotational inertia, is the rotational analog of a rigid body to a linear or an angular motion. It is one of the fundamentals of the dynamics of rotational motion. The moment of inertia must always be in a specified chosen axis of rotation. The point of motion is basically defined as the relationship between mass and the perpendicular distance to the rotational axis. KEYWORDS: Moment of Inertia, Rigid body, Angular motion, Axis of rotation Introduction Moment of inertia is always defined with respect to a specific axis of rotation. The mass moment of inertia with respect to an axis is also defined as the product of the mass times the…

Software de Aplicacion

1. Marissa’s car accelerates uniformly at a rate of +2.60 m/s2. How long does it take for Marissa’s car to accelerate from a speed of 24.6 m/s to a speed of 26.8 m/s? 2. A bowling ball with a negative initial velocity slows down as it rolls down the lane toward the pins. Is the bowling ball’s acceleration positive or negative as it rolls toward the pins? 3. Nathan accelerates his skateboard uniformly along a straight path from rest to 12.5 m/s in 2.5 s. a. What is Nathan’s acceleration? b. What is Nathan’s displacement during this time interval? c. What is Nathan’s average velocity during this time interval? 4. Critical Thinking Two cars are moving in the same direction…

Chapter 9 Review Questions

Chapter 9 Review Questions 1. What is magnetism? 2. Torque is ________. 3. A magnetic field is _________. 4. True or False: A permanent magnet is a piece of material that has been magnetized and can hold its magnetic strength for a reasonable length of time. 5. How is an electromagnet produced? 6. Which of the following produces the best electromagnet? 7. Unlike poles of a magnet _________each other and like poles_________ each other. 8. What part does polarity play in the operation of an electric motor? 9. What part of a motor produces an inductive magnetic field within itself to facilitate the rotating motion? 10. What part does the frequency of alternating current play in the operation of an…