Office: LB 355; Phone: 226-7530 Pedro.Echeverria@erau.edu Office Hours: M-W-F 1:00 - 2:00 PM Tu-Th 8:00 - 10:15 AM Goals: The purpose of the course is to present the foundations and applications of the relationship between forces acting on an object and its motion. This knowledge is essential for the detail study of further courses such as fluid dynamics‚ flight dynamics and structural dynamics. The course is also designed to emphasize the critical importance of good problem
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1) The Grinding Machine A grinding machine uses an abrasive wheel as a cutting tool to shape or change the dimensions of a hard material. The type of materials that need grinding are usually metallic items such as tools and rods. These machines generally work by reducing the material through abrasion. Grinding is used to finish workpieces that must show high surface quality and high accuracy of shape and dimension. There are several main parts in this machine. These parts are shown as below. Picture
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PHYSICS Part - I CHAPTER 1 1‚ In high energy physics scientist study: a‚ matter b‚ big particles c‚ elementary d‚ ions 2‚ Wave theory of light was presented by: a‚ Newton b‚ Maxwell c‚ Compton d‚ Huygens 3‚ Natural Radioactivity was disobeyed by Decree in. a‚ 1976. b‚ 1896. c‚ 1996. d‚ 1916. 4‚ X – rays were discovered by‚ a‚ J.J. Thomson. b‚ Crooks. c‚ Lorenz. d‚ Roentgen. 5‚ The circumference of the earth was determined by‚ a‚ Albernie. b‚ Al – Khawririmi
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developed. A bending moment is an internal force that is induced in a restrained structural element when external forces are applied. Failure by bending will occur when loading is sufficient to introduce a bending stress greater than the yield stress of the material. Bending stress increases proportionally with bending moment. It is possible that failure by shear will occur before this‚ although while there is a strong relationship between bending moment and shear forces‚ the mechanics of failure are different
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of mental tension and worry caused by problems in your life‚ work‚ etc.”. Stress can be defined psychologically as an unpleasant state of emotional and physiological arousal that people experience in situations that they perceive as dangerous or threatening to their well being (Tenibiaje2011). There are many different kinds of stress. The most common types of stress that are defined are acute stress‚ episodic acute stress‚ and chronic stress‚ and each of these different types of stress show their
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defined stress as “a state of anxiety produced when events and responsibilities exceed one’s coping abilities” (Seaward‚ 2011). Perceived challenges are identified as stressors‚ which are any object‚ event or condition that an individual perceives as threatening‚ irrespective of the actual threat posed. Therefore‚ stress is individual (Bradley‚ Iersel‚ & Spackman-Williams‚
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differences of inertia between a disk and a ring. We will use increasing forces to induce angular acceleration of both a disk and a ring of a certain mass. We will then then measure the differences in the acceleration to determine how the ring and the disk resist rotational movement. Afterward we will compare how the radius of the masses and the torque(force) applied relate to the angular acceleration. We will achieve a predictable force by using g=gravity=9.8 for this acceleration. Theory: In this experiment
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motion will stay in motion‚ and object at rest will stay at rest unless acted upon by an outside force. In other words‚ the mouse trap car will not move unless an outside force will cause it to move (the string attached to the axle). It will keep moving unless an outside force acts upon it. Second Law: To obtain a greater acceleration‚ you need to trim down the mass of the car as well as apply more force to the car‚ which usually means wind up the rope nice and tight. Third Law: Every action has an
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Analyzing Exploding Carts - Lab Activity Objectives We will study the relationship of force and the duration of the collision. In doing so we will observe the max force experienced by an accelerating cart when it impacts another cart with a spring. A stiff spring will be used. We will collect the information through two items. We will use distance and time as information collectors. This will measure the acceleration‚ velocity‚ and position of the cart as it moves down the track. The most
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Answers Chapter 1 1 a) 8 m/s 2 a) 10 500 m (10.5 km) b) 105 000 m (105 km) c) 630 000 m (630 km) 4000 s (Snails can actually move faster than this! At a more realistic 4 mm/s (0.004 m/s) it would only take the snail 400 s or 6 minutes 40 seconds.) 4 a) graph D b) graph C c) graph A d) graph B a) 8m distance = = 32 m/s 0.25s time The car is moving at constant velocity (speed). 5 IGCSE Physics Answers – Section A 3 6 gradient
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