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	Atwood machine - Wikipedia, the free encyclopedia
		The Atwood machine (or Atwood's machine) was invented in 1784 by Rev. George Atwood as a laboratory experiment to verify the mechanical laws of uniformly accelerated motion.
		Atwood's machine is a common classroom demonstration used to illustrate principles of physics, specifically mechanics.
		Atwood's original illustrations show the main pulley's axle resting on the rims of another four wheels, to minimize friction forces from the bearings.
	en.wikipedia.org /wiki/Atwood_machine (367 words)

	Atwood biography
		Atwood is best known for a work A Treatise on the Rectilinear Motion and Rotation of Bodies (published by Cambridge University Press in 1784) which is a textbook on Newtonian mechanics describing impact and simple harmonic motion.
		Atwood was highly involved with mathematical calculations which were needed by governments to run the country effectively.
		Atwood's brother Thomas had succeeded his father as curate at St Margaret's, Westminster, and he still held that position at St Margaret's when Atwood was buried there.
	www-groups.dcs.st-and.ac.uk /~history/Biographies/Atwood.html (1059 words)

	Atwood's Machine
		The Rev. George Atwood (1746-1807) was a tutor at Trinity College, Cambridge when he published A Treatise on the Rectilinear Motion and Rotation of Bodies, with a Description of Original Experiments Relative to the Subject in 1784.
		Atwood's name is forever attached to the pulley-wheel arrangement shown at the right (from the apparatus collection of Kenyon College).
		Atwood's original illustration for the machine showed the axle of the light pulley carrying the string supported on the rims of four other wheels with similarly small moments of inertia, and every early machine I have ever examined follows this pattern.
	physics.kenyon.edu /EarlyApparatus/Mechanics/Atwoods_Machine/Atwoods_Machine.html (647 words)

	Atwood's Machine
		The purpose of this laboratory activity is to study the relationship between force, mass, and acceleration using an Atwood's Machine apparatus.
		In an Atwood's Machine, the difference in weight between two hanging masses determines the net force acting on the system of both masses.
		In the free body diagram of the Atwood's machine, T is the tension in the string, M1 is the lighter mass, M2 is the heavier mass, and g is the acceleration due to gravity.
	teacher.nsrl.rochester.edu /PhyInq/Experiments/P13/P13_Atwoods_Machine.html (862 words)

	Atwood Machine explained. Diagrams and explanation
		Atwood machine which gives students an exceptionally simple but excellent tool for testing and verifying Newton’s Laws of Motion.
		In the free body diagram of the Atwood's machine, T is the tension in the string, m is the smaller mass, M is the larger mass, and g is gravity’s acceleration.
		The applications of the Atwood Machine are quite universal, especially for educational purposes.
	www.staff.amu.edu.pl /~romangoc/M3-7-atwood-machine.html (349 words)

	Conceptual problems about acccelerating systems.
		The Atwood machine shown is suspended from a spring balance.
		An atwood machine is suspended from one side of a beam balance.
		The Atwood machine's masses are held in place by a string, the system being in static balance.
	www.lhup.edu /~dsimanek/scenario/atwood.htm (1777 words)

	Atwood machine (Site not responding. Last check: 2007-11-02)
		The Atwood machine consists essentially of a pulley on a horizontal axle.
		This assemblage is installed on the top of the machine, on two parallel wooden columns, being held up by a cylindrical wooden column which rises from a base in the shape of a cross.
		John Hyacinth Magellan not only informs us that he was associated with the construction of the Atwood machine in London, but also declares that the pendulum which is found there is his own invention.
	www1.fis.uc.pt /museu/5ing.htm (805 words)

	Atwood Machine - Home (Site not responding. Last check: 2007-11-02)
		New dynamics machine invented by Atwood used to conduct experiments that prove the laws of motion of bodies that follow a rectilinear and rotational motion.
		Atwood book, entitled "A treatise on the rectilinear motion and rotation of bodies &c." Cambridge, 1784, p.291, Fig.
		Atwood a Londres 1780" are two references to be noted.
	atwood.com.ru (109 words)

	Uniformly Accelerated Motion: The Atwood Machine (Site not responding. Last check: 2007-11-02)
		The purpose of this experiment is to measure the acceleration of a given mass produced by a given force and compare it with that calculated from Newton's second law of motion.
		The machine is used to measure the acceleration produced by an arbitrarily chosen force acting on a given mass.
		Using a total mass of about 1000 g, determine the force of friction in the machine by transferring masses from the ascending side to the descending side until the mass on the descending side moves downward with uniform velocity when given a very slight push.
	www.frontiernet.net /~jlkeefer/atwood.htm (470 words)

	PIRA Bibliography - (Site not responding. Last check: 2007-11-02)
		Hang an Atwood's machine from a spring scale and take readings in both static and dynamic cases.
		The reaction on an Atwood's pulley hanging from a scale is twice the harmonic mean of the suspended weights.
		The mass on one side of the Atwood's machine is replaced with another Atwood's machine.
	physicslearning.colorado.edu /PIRA/PiraSubTOC.asp?STopic=1G30 (319 words)

	George Atwood - Wikipedia, the free encyclopedia
		George Atwood (October 1745—July 11, 1807) was an English mathematician who invented a machine for illustrating the law of uniformly accelerated motion.
		George Atwood died in Westminster at the age of 61.
		Atwood's published works, exclusive of papers contributed to the Philosophical Transactions, for one of which he obtained the Copley Medal, are as follows:
	en.wikipedia.org /wiki/George_Atwood (403 words)

	Lab 4 - Atwood's Machine (Site not responding. Last check: 2007-11-02)
		A standard experiment in physics is the Atwood’s machine: Two masses on either side of a pulley connected by a light string.
		Use a Photogate to study the acceleration of an Atwood’s machine.
		Determine the relationships between the masses on an Atwood’s machine and the acceleration.
	www.physics.niu.edu /labs150/p150lab4.html (601 words)

	James Atwood Appointed Machine Tool Specialist for Turner Supply
		Atwood will be assisting the tooling and supply professionals at Turner Supply with their customers machine tool needs throughout their 11 locations.
		Atwood brings over 20 years of machine tool and supply sales experience to the 97-year old company.
		Atwood the company looks forward to doing an even better job of taking care of their customers machine tool needs.
	www.ipnews.com /archives/general_editorials/mar02/atwood.htm (200 words)

	Welcome to the Atwood Mobile Website!
		Founded in 1909 by brothers James T. and Seth B. Atwood, the Atwood Vacuum Machine Company initially manufactured the then new technology of centralized vacuum cleaners for industrial and commercial applications.
		In 1965 Atwood acquired Bowen Water Heater Company and in early 1986 Atwood acquired the gas range and oven producing Wedgewood Industries.
		Atwood’s extensive aftermarket distribution and service network guarantee fast delivery and dependable service throughout North America and around the world.
	www.atwoodmobile.com /default.cfm (298 words)

	Atwood's Machine Lab for Cathy Garrett's Physics 105L/205L sections
		The Atwood's machine consists of a simple pulley, with a string draped over it and weights (masses) hanging on either side, as indicated in Figure 1.
		, for the Atwood's machine in free motion.
		If the Atwood's machine were an ideal system (no friction, massless pulley and string) and two equal masses were used, what would happen if the one mass were given a small puch downward?
	mama.indstate.edu /users/garrett/p105l/atwoods_machine.html (1862 words)

	g1 EXPERIMENT GAMMA, g
		For the same reason, Atwood introduced the Atwood’s machine to investigate both free fall and Newton’s laws of motion.
		measured using the precision Atwood’s machine in the rear of the lab.
		In the paired work today, a simple version of the Atwood’s machine will be used in which the pulley is assumed to have zero mass.
	www.unf.edu /~jgarner/labgam.html (713 words)

	The chess games of George Atwood
		He gave Atwood a position as a personal secretary and an office in the Treasury.
		In the 1784, he created the Atwood machine for verifying experimentally the laws of acceleration of motion.
		Atwood is best known for his work "A Treatise on the Rectilinear Motion and Rotation of Bodies", a textbook on Newtonian mechanics.
	www.chessgames.com /player/george_atwood.html (612 words)

	OverTheRhine.COM -- Orchard > Margaret Atwood's Unotchit machine
		Atwood is developing a remote book-signing machine that will allow readers to get their novels autographed without the author having to traipse to bookshops across the globe.
		Just read M. Atwood's article on her remote-signing monster and I wanted to reassure you that after your book signing in Charlotte in 2003 neither I, my daughter, nor her best friend, Allyson, became pregnant.
		Allyson did become sick and attributed it to your illness, however she was thrilled to share your germs.
	www.overtherhine.com /orchard/lofiversion/index.php/t4084.html (1679 words)

	Atwood's Machine (Site not responding. Last check: 2007-11-02)
		Atwood's machine is a device to observe the acceleration of a moving system acted upon by small forces.
		Two unequal masses are hung over a pulley by a light cord.
		In this device, the pulley carrying the cord turns on roller bearings, like those designed by Atwood in the 17th century.
	www.grinnell.edu /physics/PMuseum/AtwoodsMachine.html (107 words)

	The Atwood Machine (Site not responding. Last check: 2007-11-02)
		A quite simple device, the Atwood Machine consists of a pulley with a length of rope suspended over it.
		The Atwood Machine became the bane of our existence.
		We hated Atwood and his stupid blocks with a burning passion.
	alex.wankwood.com /atwood.html (192 words)

	index (Site not responding. Last check: 2007-11-02)
		The simple pulley system illustrated below is called an Atwood's machine.
		This is about as simple an Atwood's machine as possible.
		The tension in the string is from either equation.
	www.rdoman.com /phy/frc/frc11 (295 words)

	Williston Northampton School - Alumni / Atwood's Machine (Site not responding. Last check: 2007-11-02)
		The heart of Atwood's Machine is the low-friction pulley at the top, over which a light string is passed with almost-equal weights at either end.
		The clock is used to time the fall of the masses, which can be used to find the acceleration due to gravity.
		The design was published by George Atwood of Cambridge University in the last decade of the 18th century.
	www.williston.com /home/content.asp?id=1062 (115 words)

	[No title]
		The force will be applied to the block using a weight hanging on a string that runs over a pulley.
		An apparatus of this type is called an Atwood machine.
		The objective of the experiment is to use Newton’s second law to predict the amount of hanging mass necessary to produce a given acceleration of the block.
	www.olemiss.edu /courses/phys215/Labs/L06-Atwood.doc (1219 words)

	Ben Haley - Swinging Atwood Machine
		The Swinging Atwood Machine is an interesting system because it's behavior may be completely studied using advanced classical mechanics and because elements of chaos may be seen in the behavior of the system.
		We are now ready to consider the dynamics of the Swinging Atwood Machine.
		However, the phase space of the Swining Atwood Machine is four dimensional, so we must consider how to "take pictures" of motion through four dimensions.
	www.physics.purdue.edu /research/ugrad_rsch/haley/sam.html (326 words)

	Modified Atwood Machine
		The Modeling Method of teaching physics involves, in part, a series of student directed labs where students derive the laws of physics, then present their results and conclusions to the class.
		The introduction of dynamics is done by a standard modified Atwood machine lab.
		Part 1 of the lab determines the relationship between force and acceleration, with the mass held constant.
	homepage.mac.com /cbakken/physlab/plab97/labs/jjensen/modatwoods.html (877 words)

	[No title]
		The second law of motion describes what happens if the resultant force is different from zero.
		The Atwood machine consists of two weights connected by a light, flexible string which passes over a light pulley.
		Using a total mass of about 2000 g, determine the force of friction in the machine by transferring masses from the ascending side to the descending side until the mass on the descending side moves downward with uniform velocity when given a very slight push.
	www.frontiernet.net /~jlkeefer/atwood.doc (565 words)

	Atwood Machine
		n Atwood Machine is a simple device consisting of an ideal pulley and two masses connected over the pulley by an ideal string (see diagram at right).
		The problem is to find the acceleration of the system and the tension in the connecting string given the two masses.
		Text versions of the equation work are made with Microsoft Equation Editor and are embedded in Microsoft Word documents.
	physics.pingry.org /Explorations/Dynamics/Atwood/index.html (480 words)

	Atwood Machine (Site not responding. Last check: 2007-11-02)
		Object: The classic Atwood Machine with a non-massless wheel.
		Discussion: A string over a low friction pulley is connected to two unequal masses.
		Hang any unequal weights on a string over the wheel and set the wheel to about 2 meters from the floor with the weight to floor distance being 1.5 meters A rod clamped perpendicular to the floor stand can be used as a starting reference point.
	www.phy.syr.edu /courses/demos/11a.html (236 words)

	LAB 5: ATWOOD MACHINE and INCLINED PLANE
		The Atwood machine is a low friction fixed pulley with two masses m1 and m2 hanging at the ends of a thin string that passes around the pulley.
		Of course, if m1=m2 the system is in equilibrium and should remain at rest if initially at rest.
		NOTE: To obtain the acceleration values for both Part 1 and Part 2 you may use in MacMotion a linear fit of the v-t data (slope=a) and/or a quadratic fit of the x-t data (coefficient of the quadratic term = a/2).
	www.sewanee.edu /Physics/PHYSICS101/LAB5.html (468 words)

	Demonstrations
		Walter Connolly, "Atwood's Machine Using Moment of Inertia Pulley", TPT, Vol.
		Jon Ogborn, "Origin of the Atwood Machine", TPT, Vol.
		White and L. Pace, "The Atwood Machine: A Fun Problem for Beginners", TPT, Vol 11, # 9, Dec. 1973, p.
	faraday.physics.uiowa.edu /mech/1G10.40.htm (418 words)

	Tension in a String: Atwood's Machine
		The Atwood machine was invented by George Atwood in 1784 as a laboratory experiment to prove Newtons laws.
		Since then it has haunted students of mechanics and made life easier for elevator motors.
		This is the idea behind the counter-balance of an elevator: to approximate the loaded elevator system to a stable Atwood machine so as to minimize the force which must be supplied by the elevator motor to raise and lower the elevator.
	www.pha.jhu.edu /~broholm/l8/node3.html (478 words)

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