Content Identify 4 concept in Chapter 5 (Forces) Line 5.1 Sun Zi said: To manage a large force is similar to managing a small force. Sun Zi said: Managing a large force can similar to managing a small force. It is an element of organization and system. To control and direct a large force can be similar to controlling and operating a small force. It is an element of formations and communications. Sun Zi talks about how to adopt a large force like a small force. The following aspects evaluate it and
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TORQUE? Torque is a measure of how much a force acting on an object causes that object to rotate. The object rotates about an axis‚ which we will call the pivot point‚ and will label ’O ’. We will call the force ’F ’. The distance from the pivot point to the point where the force acts is called the moment arm‚ and is denoted by ’r ’. Note that this distance‚ ’r ’‚ is also a vector‚ and points from the axis of rotation to the point where the force acts. (Refer to Figure 1 for a pictoral representation
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deformations and stability of a body when subjected to external forces. External load Internal load Equilibrium of a Deformable Body - Identify and apply the statics principles or equilibrium equations. - Isolated the rigid body and draw the free body diagram. External Loads Surface Forces caused by direct contact of other body’s surface. Body Forces other body exerts a force without direct contact. Concentrated Forces acts at a point. Any load over a relatively small area
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Equilibrium of a Two-Force Body Equilibrium of a Three-Force Body Sample Problem 4.6 © 2007 The McGraw-Hill Companies‚ Inc. All rights 4-* Eight h Vector Mechanics for Engineers: Statics Introduction • For a rigid body in static equilibrium‚ the external forces and moments are balanced and will impart no translational or rotational motion to the body. • The necessary and sufficient condition for the static equilibrium of a body are that the resultant force and couple from all external forces form a system
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I noticed that I have not described the rule of F=ma in either the last email or this one. Where would you suggest it be described? Somehow the details of adding forces and balanced forces were missed in the last email and also it did not make perfect sense for me to note. As far as I am concerned the khan academy does not lecture it so I am not too sure in what to do about this. I am assuming finding velocity is the sole purpose of applying the law of conservation of momentum. Is this true
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Stress-Strain Apparatus AP-8214A 1 Force Sensor PS-2104 1 Rotary Motion Sensor PS-2120 1 Calipers SF-8711 Required but Not Included: 1 850 Universal Interface UI-5000 1 PASCO Capstone Software UI-5400 Introduction The objective of this lab is to find the relationship between tensile stress and strain for various materials. The Stress-Strain Apparatus stretches (and in some cases breaks) a test coupon while it measures the amount of stretch and force experienced by the test coupon
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purpose of gravity Gravity is the weakest of the four fundamental forces‚ yet it is the dominant force in the universe for shaping the large scale structure of galaxies‚ stars‚ etc. The gravitational force between two masses m1 and m2 is given by the relationship: Newton’s Law of Universal Gravitation r - the distance separating the centers of mass of the objects F - the force of gravity (in units
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yourself how a roller coaster works? Would roller coasters safely run without the knowledge that physics offers us? The answer is no. Roller coasters are driven by physics; it mobilizes and gives its riders amusement through forces such as inertia‚ gravitation‚ and centripetal forces and utilizes different types of energies such as potential and kinetic energy. Physics is what makes roller coasters safe and effective. It is not only the high speed of the trains of a roller coaster that makes the ride
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Newton’s First Law of Motion explains that objects in a state of uniform motion tends to remain in rest unless an external force is applied to it. Galileo’s concept of inertia is termed “Law of Inertia”. Law of Inertia‚ an object in motion will continue in the same motion unless acted by an outside force. Aircraft in flight is an example of First Law of Motion‚ four forces on an aircraft; lift‚ weight‚ thrust‚ and a drag. Consider the motion of an aircraft at constant altitude‚ we can neglect the
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3rd Law Cont. If object 1 and object 2 interact‚ the force exerted by object 1 on object 2 is equal in magnitude but opposite in direction to the force exerted by object 2 on object 1. Equivalent to saying a single isolated force cannot exist • F12 may be called the action force and F21 the reaction force. • Actually‚ either force can be the action or the reaction force Some Action-Reaction Pairs is the normal force‚ the force the table exerts on the TV and always perpendicular to the
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