Ppt on center of gravity

CHAPTER 20: LOCOMOTION: WHEN SUSPENDED AND FREE OF SUPPORT KINESIOLOGY Scientific Basis of Human Motion, 12 th edition Hamilton, Weimar & Luttgens Presentation.

center of gravity must be brought as near as possible to the center of rotation. 14.In support swings the center of gravity should be at the point of support. 12.The rotation of the hands about a bar is opposed by frictional forces. 13.In all mounts involving swinging, the center of gravity must be brought as near as possible to the center of rotation. 14.In support swings the center of gravity/ and stretch increase the distance between center of gravity and the axis of rotation.  Increases torque on the/


Chapter 5 Torques and Moments of Force

an unknown force (or torque) acting on an object, if all the other forces and torques acting on the object are known and the object is in static equilibrium Define center of gravity Estimate the location of the center of gravity of an object or body What Are Torques? Turning effect produced by a force is called a torque May also be called a moment/


Alta High Conceptual Physics

Alta High Conceptual Physics Center of Gravity Chapter 10 Alta High Conceptual Physics Alta High Conceptual Physics Center of Gravity Center of gravity is often called the “Center of Mass” and is defined as the point at which all mass seems be concentrated. Center of Gravity is a balance point. You can use a plumb bob to find the center of gravity Alta High Conceptual Physics Alta High Conceptual Physics High Jumper Alta High Conceptual Physics Alta High/


©2006 CSUC Institute for Research in Intelligent Systems Center of Gravity June 13, 2006.

CSUC Institute for Research in Intelligent Systems Center of Gravity For the most stable robot, its Center of Gravity should be as close to the center of its Support Polygon as possible. This robot tips over because the Center of Gravity is outside of the Support Polygon. ©2006 CSUC Institute for Research in Intelligent Systems Center of Gravity The height of the Center of Gravity also affects balance. Even though the center of the RCX is within this robot’s Support/


Testing Gravity Gravity A natural force Always pulling toward the center of Earth due to the Earth’s mass Things dropped near the surface of the Earth.

AMSTI Kit Second Grade STANDARD P4 – Describe observable effects of forces, including buoyancy, gravity, and magnetism. Example: gravity – apple falling from a tree. Butterfly/Fulcrum/beam/balance ____ – gravity pulls the objects down until you find the center of gravity (balance point) Mobiles – must find the center of gravity Bird Fun Leaning Tower of Pisa Space Needle Center of Gravity Twin Towers Center of Gravity - Buoy Center of Gravity - Below the ground How stable are skyscrapers? Posted by/


© Center For Advantage - 2005 How to Use the Art of War: Sun Tzu Strategy Card Deck for Military Planning Robert Cantrell Center For Advantage www.centerforadvantage.com.

appointee, even though the underlying principle is the same © Center For Advantage - 2005 Center of Gravity © Center For Advantage - 2005 Center of Gravity The Center of Gravity is the element within a system that, by creating some change to that element, will produce your intended result A key part of military planning is knowing where best to effect change © Center For Advantage - 2005 Center of Gravity The Center of Gravity card prompts you to consider all physical and behavioral/


College and Engineering Physics Density and Center-of-Mass 1 TOC Definition of a System Energy of a System Momentum of a System Force a System Work a System.

the table 4.Normal force from the hand Top Book Bottom Book College and Engineering Physics Density and Center-of-Mass 10 TOC The Force on a System 1.Gravity from the earth (on the system) 2.Normal force from the apple 3.Friction from the apple /are left with the following forces acting on the system (both books)… System College and Engineering Physics Density and Center-of-Mass 14 TOC The Work on a System 1.Gravity from the earth (on the system) 2.Normal force from the apple 3.Friction from the apple 4./


Best idea Watch the short clip. After you watched the clip answer in your notebooks What is the important discovery? What does gravity do? Can we see.

the clip answer in your notebooks What is the important discovery? What does gravity do? Can we see gravity ? Some facts about gravity Gravity is an invisible force that occurs between two objects. The reason things stay on the Earth’s surface is because of the gravitational pull toward the Earth’s center. Gravity is also the reason the Earth spins around the sun. The bigger the/


Chapter 10 Center of Gravity

Center of Gravity Center of Gravity – Is the point located at the object’s average position of weight For symmetrical objects, such as a baseball, the center of gravity is at the geometric center of the object. Consider the following objects and their center of gravity: The center of gravity may be located where no actual material exists: Q: Where is the center of gravity of a donut? A: In the center of the hole. Q: Where is the center of gravity of a basketball? A: In the center of/


Tactical Operational Strategic From ADRP 3-0 paragraph 2-7: A campaign is a series of related major operations aimed at achieving strategic and operational.

; Finally – concept is effects-based, not capabilities-based, should encourage thorough thinking by policy-makers. Analyzing Center(s) of Gravity Strange, Joe and Richard Iron. Understanding Centers of Gravity and Critical Vulnerabilities, Part II: The CG-CC-CR-CV construct: A Useful Tool to Understand and Analyze the Relationship Between Centers of Gravity and their Critical Vulnerabilities. (1) Critical Capabilities (CC) ILE: Critical capability—Actions (verbs) that will achieve/


Official flags for government agencies are required to have specific hoist (width), fly (length) measurements. They all have a fly:hoist ratio of 1.9:1.

Front seats36491________ Rear seats172_______27,692 Oil26_______541 Fuel347_______20,339 Aircraft 4 Safe limit: 74.9 Center of Gravity _____, Is this within the limit? ______ CENTER OF GRAVITY Complete the charts. Formulas: (Weight)(Arm) = Moment Total Moment ÷ Gross Aircraft Weight = CG Name: ___________________________________ Center of gravity (aircraft) From Wikipedia, the free encyclopedia Center of Gravity The center-of-gravity (CG) is the point at which an aircraft would balance if it were possible/


The Urantia Book Paper 11 The Eternal Isle of Paradise Paper 10 - The Paradise Trinity.

The Father is always to be found at this central location. Did he move, universal pandemonium would be precipitated, for there converge in him at this residential center the universal lines of gravity from the ends of creation. Whether we trace the personality circuit back through the universes or follow the ascending personalities as they journey inward to the Father; whether we trace the/


Nearly every child knows of the word gravity. Gravity is the name associated with the mishaps of the milk spilled from the breakfast table to the kitchen.

earth, directly proportional to the mass of the object, and inversely proportional to the square of the distance which separates the centers of the earth and the object. But Newtons law of universal gravitation extends gravity beyond earth. Newtons law of universal gravitation is about the universality of gravity. Newtons place in the Gravity Hall of Fame is not due to his discovery of gravity, but rather due to his discovery that gravitation/


Schedule Today: Gravity Thursday: Light Tuesday, Feb 5: More light Thursday, Feb 7: Test 1 Today: Gravity Thursday: Light Tuesday, Feb 5: More light Thursday,

force! Why??? The force changes by 1/r 2 The inverse square law applies to ALL Forces….gravity, magnetism, electrical fields, light….! Gravity Light What is the difference in terms of gravity between these pictures? Gravity Remember gravity is measured from the center of an object -We are 6378 km from the center of the Earth -Space shuttle astronauts in space are only 200 km farther away….. -In inverse square/


Chapter 3 Lesson 2. Newton’s Second Law Newton’s Second Law Newton’s Second Law of Motion The acceleration of an object is directly proportional to the.

symbol g and is sometimes called the acceleration of gravity. By Newton’s second law of motion, the force of Earth’s gravity on a falling object is the object’s mass times the acceleration of gravity. By Newton’s second law of motion, the force of Earth’s gravity on a falling object is the object’s mass times the acceleration of gravity. Weight The gravitational force exerted on an object/


Strategy For The 21 st Century Prometheus Process venturist ® incorporated Target For Success: Identify Centers of Gravity Design the Future Target for.

The 21 st Century venturist ® incorporated Copyright Venturist®, Inc. 2001-2006 – All Rights Reserved Licensed To Advanced Micro Devices, Sunnyvale, CA and Austin, TX Impact Of Centers Of Gravity As A Function Of Links Number of Links Number of Nodes with Links Distribution of Node Linkage From Barabasi & Bonabeau + - - Strategy For The 21 st Century venturist ® incorporated Copyright Venturist®, Inc. 2001-2006 – All Rights Reserved Licensed To Advanced/


Betting on Gravity Ken O’Donnell Associate Dean, Academic Programs and Policy California State University Office of the Chancellor Association of American.

Center for Education Statistics Betting on Gravity Student Ethnicity, 2003-04 source: National Center for Education Statistics Betting on Gravity Student Ethnicity, 2003-04 source: National Center for Education Statistics Betting on Gravity Student Ethnicity, 2003-04 source: National Center for Education Statistics Betting on Gravity Student Ethnicity, 2003-04 source: National Center for Education Statistics Betting on Gravity/Council on Education 2010 changing role of faculty mentor students store and /


J.M. Gabrielse VEX Center of Gravity J.M. Gabrielse.

. Gabrielse Robot Tips Keep heavy items: close to the ground in the middle of the robot The protobot’s battery and arm balance each other out to keep the center of gravity in the center of the robot. J.M. Gabrielse Your Turn Where is the center of gravity? What happens to a robot if the center of gravity isn’t between the wheels? How can you make a robot less tippy/


Copyright © 2011 Pearson Education South Asia Pte Ltd Chapter Objectives To discuss the concept of the center of gravity, center of mass, and the centroid.

comparison, the location of the center of gravity coincides with that of center of mass Particles have weight only when under the influence of gravitational attraction, whereas center of mass is independent of gravity CENTER OF GRAVITY, CENTER OF MASS, AND THE CENTROID OF A BODY (cont) Copyright © 2011 Pearson Education South Asia Pte Ltd Centroid of Mass A rigid body is composed of an infinite number of particles Consider arbitrary particle having a weight of dW CENTER OF GRAVITY, CENTER OF MASS, AND THE/


Center of Gravity and Centroid 9 Engineering Mechanics: Statics in SI Units, 12e Copyright © 2010 Pearson Education South Asia Pte Ltd.

.1 Center of Gravity and Center of Mass for a System of Particles Center Mass Provided acceleration due to gravity g for every particle is constant, then W = mg By comparison, the location of the center of gravity coincides with that of center of mass Particles have weight only when under the influence of gravitational attraction, whereas center of mass is independent of gravity Copyright © 2010 Pearson Education South Asia Pte Ltd 9.1 Center of Gravity and Center of Mass for a System of Particles Center/


Michael Seeds Dana Backman Chapter 3 The Origin of Modern Astronomy.

However, few believed, at first, that the sun actually was the center of the solar system and that Earth moved. De Revolutionibus How the /center of the planet. Orbital Motion Once the engines fire and the ship reaches circular velocity, the engines can shut down. The ship is in orbit and will fall around the planet forever—so long as it is above the atmosphere’s friction. No further effort is needed to maintain orbit—thanks to the laws Newton discovered. Orbital Motion Newton understood that gravity/


Gravity Sir Isaac Newton is credited with the discovery of gravity. Now, of course we know that he didn’t really discover the thing – let’s face it, people.

it spins when you release it, it seems to follow a very erratic path. Its CG, however, traces out a nice smooth parabola. Center of Gravity All irregular objects rotate about their CG when thrown. Center of Gravity Let’s do some more gravity problems. You weigh 567 N on earth. How much would you weigh on Mars? First we must calculate the mass by using the/


Page 1 Lecture 3: Motion and Gravity Claire Max April 7, 2009 Astro 18: Planets and Planetary Systems UC Santa Cruz.

is directly proportional to the product of their masses. 3.Attraction is inversely proportional to the square of the distance between their centers. Page 52 Center of Mass Because of momentum conservation, two objects orbit around their “center of mass”Because of momentum conservation, two objects orbit around their “center of mass” Page 53 Newton’s universal law of gravitation Force of gravity between two bodies, 1 and 2Force of gravity between two bodies, 1 and/


Conceptual Physics Notes on Chapter 10-11 Center of Gravity & Rotational Mechanics.

Conceptual Physics Notes on Chapter 10-11 Center of Gravity & Rotational Mechanics Center of Gravity & Rotational Mechanics Every object will rotate about a central point…CENTER OF GRAVITY. Every object will rotate about a central point…CENTER OF GRAVITY. Note: Also known as CENTER OF MASSNote: Also known as CENTER OF MASS Center of Gravity & Rotational Mechanics How to find the Center of Gravity (CG). How to find the Center of Gravity (CG). All of an objects mass acts as if it were concentrated at it’s/


Andris Skuja, May 9, 2006 -- Physics 270Andris Skuja, May 9, 2006 -- Physics 270 Physics 270 – The Universe: Astrophysics, Gravity and Cosmology.

center. Andris Skuja, May 9, 2006 -- Physics 270Andris Skuja, May 9, 2006 -- Physics 270 Cosmic censorship Singularity: a point at which spacetime divergesSingularity: a point at which spacetime diverges –infinite forces are acting –laws of physics break down –quantum gravity/9, 2006 -- Physics 270 Supermassive Black Holes EvidenceEvidence –Kinematic evidence Stellar motions in center of Milky WayStellar motions in center of Milky Way Stellar and gas motions in other galaxiesStellar and gas motions in other /


Chapter 2 FLUID STATICS. The science of fluid statics :  the study of pressure and its variation throughout a fluid  the study of pressure forces on.

in its various parts Determination of Rotational Stability of Floating Objects Any floating object with center of gravity below its center of buoyancy (centroid of displaced volume) floats in stable equilibrium (Fig. 2.26a). Certain floating objects, however, are in stable equilibrium when their center of gravity is above the center of buoyancy. Figure 2.28a: a cross section of a body with all other parallel cross sections identical. The center of buoyancy is always at/


Christopher Simmons l Structural Option AE Senior Thesis l Spring 2010 Faculty Consultant l Dr. Ali M. Memari Baltimore Hilton Convention Center Baltimore.

RTKL Snow  Controlling load combination 1.2 SW + 1.6 LL + 1.2 SDL Table 1 - Gravity Loads DescriptionASCE 7-05RTKL ValueDesign Value DEAD (DL) Concrete150pcf Ceiling, Mech, Ducts, etc.20-25psf5-20psf20psf LIVE /f’ c = 5 ksi | f’ ci = 3 ksi  Dimensions  Application of design loads  Analysis  Forces & stresses  Displacements Baltimore, MD Baltimore Hilton Convention Center Baltimore, MD Existing Building Information Project Goals Structural Depth Study Construction Management Breadth Study Acoustical /


Orbits and Masses of astronomical objects Using gravity and orbits to to measure masses Masses of planets, stars and galaxies Dark matter.

mass, but it is significantly bigger (i.e., it has a lower density). Remember: the force of gravity depends on the masses of the objects and the distance between their centers. Which planet do you expect to move faster, A or C? A. Planet A will move / have the same mass): A. The force of gravity on star C is greater than the force of gravity on star D because it is closer to the center of the galaxy B. The force of gravity on star D is greater than the force of gravity on star C because more dark matter is/


Physics of Flight Four Forces There are four forces that act on the plane while in flight Lift Gravity Thrust Drag.

end of the plane Center of gravity is where the pull of gravity is balanced equally. Finding the Center of Gravity Hanging the plane from a string will help you find the center of gravity The center of gravity is not found yet, because the plane is not balanced Finding the Center of Gravity When the string is attached to the center of gravity, the plane will be balanced Balancing Act A plane will fly best when the center of gravity and the center of lift/


STATICS CENTER OF GRAVITY AND CENTROID. Copyright © 2010 Pearson Education South Asia Pte Ltd Chapter Objectives Concept of the center of gravity, center.

Pte Ltd Chapter Objectives Concept of the center of gravity, center of mass, and the centroid Determine the location of the center of gravity and centroid for a system of discrete particles Copyright © 2010 Pearson Education South Asia Pte Ltd 9.1 Center of Gravity and Center of Mass for a System of Particles Center of Gravity Locates the resultant weight of a system of particles Consider system of n particles fixed within a region of space The weights of the particles can be replaced/


What material makes up most of the Earth? Rocks!

.com/cliff-house-san-francisco.html Engineering Erosion Compiled by Rhonda Hawley, Educator Funded by the MathScience Innovation Center The job of the Civil Engineer is to plan, slow down, and even STOP! the rock/soil from moving in /com/index.cfm http://www.unitedstreaming.com/videos/dsc/externalAppl ications/interactiveVideos/index.html?vid=32 Experiment Six: Demo Gravity So How Do Engineers Slow Down and Stop Erosion? Planning Comes First! http://www.bioengineering.com/projects/watershed/universityofiowa/


Adam Kaczmarek Structural Option Spring 2011, Hanagan Cambria Suites CONSOL Energy Center Pittsburgh, PA Cambria Suites Hotel Pittsburgh, PA Adam.

– January 6, 2010 Finish Date – May 31, 2010 Existing Construction Schedule Redesigned Construction Schedule Adam Kaczmarek Structural Option Spring 2011, Hanagan Cambria Suites Hotel @ CONSOL Energy Center Pittsburgh, PA I.Project Background II.Scope of Work III.Structural Depth Study i.Gravity System ii.Lateral Force Resisting System iii.Impact on Foundation IV.Architectural/Façade Breadth V.Construction Management Breadth VI.Summary/


Circular Motion, Center of Gravity, & Rotational Mechanics Chapters 9, 10, & 11.

), may have the center of gravity very far from the geometric center Center of Gravity Center of Mass Center of Mass – the average position of all the particles of mass that make up an object Center of Mass – the average position of all the particles of mass that make up an object For almost all objects on or near Earth, center of gravity and center of mass are interchangeable For almost all objects on or near Earth, center of gravity and center of mass are interchangeable If/


Gravity May 8 th, 2015. Upcoming Conferences Today: Misha Next week: Sandeilis, Harold, Maisha.

-R Diagram Comparing Our Sun to Other Stars Our Sun Compared to a Giant Youtube Video: https://www.youtube.com/watch?v=HEheh1BH34Q Content Take Away Gravity is a force that pulls everything towards the center of mass Work Time Take Away Continue to work on and finish up your briefs New Unison Reading Leaders Section 1 ABCDE SandeilisSharnaThanyaObnielMegany CarolineAntonetaKimberlyRobertAlimatou MarbelinMaishaGabrielaDaiana ScarlettSadiaHaroldKeyzie Khady/


Albany Medical Center Patient Pavilion Albany, Ny Thomas J. Kleinosky – Structural Senior Thesis 2012 | Advisor: Dr. Hanagan.

Proposal  Progressive Collapse  MAE Incorporation  Mechanical Breadth  Conclusion Owner: Albany Medical Center Architect: TRO Jung|Brannen General Contractor: Gilbane Building Co. Structural Engineer: Ryan-Biggs Associates/Gravity System  Progressive Collapse  MAE Incorporation  Mechanical Breadth  Conclusion Introduction:  Analyzing a typical patient room  Calculate thermal performance of existing façade  Propose a new precast façade Process:  Determine number of patient rooms on exterior of/


8 - 1 Location Decisions PowerPoint presentation to accompany Heizer and Render Operations Management, Global Edition, Eleventh Edition Principles of Operations.

of the center of gravity by finding the average of the x-coordinates and the average of the y- coordinates Center of Gravity Method 8 - 34 Example: Center of Gravity Method Destinationxy D122 D235 D354 D485 1816 Suppose you are attempting to find the center of gravity for this problem. 8 - 35  When the quantities to be shipped to every location are unequal, the coordinates of the center of gravity are found as follows: Center of Gravity Method 8 - 36 Example 1: Center of Gravity/


Chapter 7 Rotational Motion and the Law of Gravity.

Always Toward the Center of Rotation Rotational Motion and the Law of Gravity  Forces of Rotational Motion  Centripetal Force Rotational Motion and the Law of Gravity  Forces of Rotational Motion  Centripetal Force Rotational Motion and the Law of Gravity  Forces of Rotational Motion  Centripetal Force Rotational Motion and the Law of Gravity  Forces of Rotational Motion  Centripetal Force  Direction  Always toward the Center of Rotation Rotational Motion and the Law of Gravity  Problem A pebble/


2.6 FORCE COMPONENTS ON CURVED SURFACES When the elemental forces p δA vary in direction, as in the case of a curved surface, they must be added as vector.

in its various parts Determination of Rotational Stability of Floating Objects Any floating object with center of gravity below its center of buoyancy (centroid of displaced volume) floats in stable equilibrium (Fig. 2.26a). Certain floating objects, however, are in stable equilibrium when their center of gravity is above the center of buoyancy. Figure 2.28a: a cross section of a body with all other parallel cross sections identical. The center of buoyancy is always at/


Natural Laws (DE. 4). How Laws of Nature Affect Vehicle Balance & Weight Load Transfer Gravity Kinetic Energy MomentumInertia.

in a vehicle is centered or balanced.  The higher the center of gravity, the more likely the vehicle is to roll over. Center of Gravity and Crashes  SUVs are more likely to roll over in a collision because they have a higher center of gravity. SUV Rollover Center of Gravity and Wind  All vehicles are affected by high winds  Higher center of gravity = more affected  All vehicles are affected by high winds  Higher center of gravity = more affected Controlling/


Chapter 2 FLUID STATICS. The science of fluid statics will be treat in two parts: the study of pressure and its variation throughout a fluid; the study.

the bottom once it is completely submerged, owing to compression of air trapped in its various parts. Determination of Rotational Stability of Floating Objects Any floating object with center of gravity below its center of buoyancy (centroid of displaced volume) floats in stable equilibrium (see Fig. 2.26a). Certain floating objects, however, are in stable equilibrium when their center of gravity is above the center of buoyancy. Figure 2.28a is a cross section/


Columbia University Robotics Group Robotic Grasp Planning Peter Allen Department of Computer Science Columbia University.

cone boundary x y Contact Wrenches Each force acts at a position on object. Compute the corresponding wrench with respect to object’s center of gravity:  - torque scale factor, i: contact number j: (1-8) around cone boundary x y Contact Wrenches Each force/ acts at a position on object. Compute the corresponding wrench with respect to object’s center of gravity:  - torque scale factor, i: contact number j: (1-8) around cone boundary x y Contact Wrenches Each force/


The Urantia Book Paper 7 Relation of the Eternal Son to the Universe Paper 7 - Video study group link part 1 Paper 6 - The Eternal Son Paper 7 - Video.

by pure spirit energies is inherent in the absoluteness of the Son; it is not due to the interposition of the antigravity forces of the Third Source and Center.circuitstranscendenceantigravityThird Source and Center. (82.2) 7:1.3 Spirit realities respond to the drawing power of the center of spiritual gravity in accordance with their qualitative value, their actual degree of spirit nature. Spirit substance (quality) is just as responsive/


BA , 1 Rigid Balancing Improving the mass distribution of rigid rotors to reduce residual unbalance at service speed!

. DD E:Center of gravity displacement S:Center of gravity U:Unbalance mass D-D:Shaft axis T-T:Center of gravity axis T T  S F U1 F U2 U1 U2 U1 <> U2 BA 7764-11, 8 Unbalance Effects The effects of unbalance will be: Displacement of the center of gravity Centrifugal forces created during rotation Unbalance: Specific unbalance or center of gravity eccentricity: Centrifugal force: e:Center of gravity displacement r:Radius to unbalance mass S:Center of gravity u:Unbalance/


Center of Gravity.

critically important in building planning Build on FIRM FOUNDATION!!! Leaning Tower of Pisa Build on FIRM FOUNDATION!!! Class Challenge: Super Glue Chair Center of Gravity What is center of gravity? The center of gravity is the specific point where all of the mass of the structure is evenly distributed around Mass vs. Weight Mass Amount of matter in an object Weight Force of gravity felt on that object What is “equilibrium” A state in which/


Principles of Ship’s Stability

’S STABILITY STABILITY REFERENCE POINTS m h Zm G WO r Lo ZG a C Zc MAIN STABILITY POINTS h Wo m Q LO a G C m metacenter G center of gravity C center of buoyancy m Q L1 h Q Wo LO a G W1 C C1 SHIP’S STABILITY METACENTER m C0 SHIP’S STABILITY METACENTRIC HEIGHT FORMULAS h=r-a h/


Physics 100 Chapt 10 Newtons Universal Law of Gravitation.

6 m The moon is 60x further from the Earths center than objects on (near) the Earths surface = 60 x R E 1 60 1 3600 ()2=)2= R E = 6.4x10 6 m Newtons big idea The force of gravity gets weaker as distance squared The moon is 60x /further from the Earths center than objects on (near) the Earths surface The strength of Earths gravity near the Moon is (1/60) 2 t=1/3600 times weaker Gravity gets weaker as 1/dist 2 Universal law of gravity m M/


Chapter 9 Gravity.

either way, so the force of gravity on the apple would be the same. For Earth gravity, the inverse-square law relates to the distance between an object and the center of Earth. Answer: D Our sensation of weight a. is due to our sensation of mass. b. is due to the force of gravity. c. may or may not be due to the force of gravity. d. remains constant as/


Lecture 20 Star Formation. Announcements Comet Lovejoy will be a late night/early morning object through the rest of the semester, so currently there.

clouds, triggering new star formation. Let The Collapse Begin! Shockwave increases density of cloud. Shockwave increases density of cloud. Gravity wins! Cloud begins to collapse! Gravity wins! Cloud begins to collapse! –Temperature through cloud not even. Coldest spots/ center of the knot. Matter begins to pile up at the center of the knot. –Gravitational collapse releases thermal energy. –Center of knot begins to heat up as collapse continues. –Contracts into a spherical “glob” of hot gas at the center of/


Chapter 4 Statics 4.1 Torques 4.2 Equilibrium of Rigid Bodies

. Position of the center of gravity: An object is in balance if its center of gravity is above its base of support. The relation of the line of gravity to the edge of the base An object has balance depending on where the C. G. is in relation to the base of support (balance is less if the C.G. is near the edge of the Base of support). The height of the center of gravity The higher the center of gravity/


The Origin of Oceanic Trenches

of the western Pacific Ocean, directly opposite the center of the Atlantic Ocean. The plate tectonic theory claims that plates drifting on the earth’s surface dive into the earth and drag down the folds. Many reasons will be given why this cannot happen. As the flood increasingly altered earth’s balanced, spherical shape, gravity/!” In other words, something has pulled, not pushed, trenches down. The downward pull of gravity in and above trenches is less than expected, even after adjusting for the trench’s /


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