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Topic: Centrifugal force

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	centripetal force and centrifugal force - HighBeam Encyclopedia (Site not responding. Last check: 2007-10-17)
		The centrifugal force acts on the source of the centripetal force to displace it radially from the center of the path.
		Thus, in twirling a mass on a string, the centripetal force transmitted by the string pulls in on the mass to keep it in its circular path, while the centrifugal force transmitted by the string pulls outward on its point of attachment at the center of the path.
		The centrifugal force is often mistakenly thought to cause a body to fly out of its circular path when it is released; rather, it is the removal of the centripetal force that allows the body to travel in a straight line as required by Newton's first law.
	www.encyclopedia.com /doc/1E1-centripe.html (506 words)

	Centripetal Force
		Whereas the centripetal force is seen as a force which must be applied by an external agent to force an object to move in a curved path, the centrifugal and coriolis forces are "effective forces" which are invoked to explain the behavior of objects from a frame of reference which is rotating.
		The driver of a car on a curve is in a rotating reference frame and he could invoke a "centrifugal" force to explain why his coffee cup and the carton of eggs he has on the seat beside him tend to slide sideways.
		The centrifugal force is a useful concept when the most convenient reference frame is one which is moving in a curved path, and therefore experiencing a centripetal acceleration.
	hyperphysics.phy-astr.gsu.edu /hbase/corf.html (322 words)

	Centrifugal force
		It is the force that counteracts centrifugal force by keeping an object a certain radius from the axis of rotation.
		As a matter of interest, centrifugal loads may be from 6 to 12 tons at the blade root of two to four passenger helicopters.
		The horizontal force is caused by the centrifugal force due to rotation.
	www.dynamicflight.com /aerodynamics/centrifugal_force (531 words)

	Centrifugal Force - Search Results - MSN Encarta (Site not responding. Last check: 2007-10-17)
		Centrifugal Force, a force that acts outwardly from a centre.
		It is often thought that a centrifugal force acts on the object moving in a curved path, tending...
		Centrifuge, mechanical device using the principle of centrifugal force to separate substances of different densities.
	uk.encarta.msn.com /Centrifugal_Force.html (122 words)

	PHYSICS 24/7
		Arguments denying the existence of centrifugal force are either groundless or are in conflict with tenets of classical physics.
		Centrifugal force does not appear in free body diagrams of objects moving in a circle because it does not act on the object undergoing circular motion.
		Whereas normal force is the reactionary force of a surface perpendicular to the surface; centrifugal force is a reactionary force of an object moving along a curved path, directed away from the center of curvature.
	www.physics247.com /motionquicklessons/centrifugal_force.shtml (739 words)

	Does centrifugal force hold the Moon up?
		Centrifugal force was invented to allow us to do proper bookkeeping in a noninertial frame, if we insist on using such a frame to work with Newton's laws (and there might be a good reason for wanting to do so).
		Such a mass-dependent force is an indicator that something is not right--we have chosen to use a noninertial frame, and if we demand Newton's laws to hold in such a frame, then we'll have to invoke this fictitious force.
		Centrifugal force is such a fictitious force, invented purely to balance the books, when we analyse a situation in a rotating frame.
	math.ucr.edu /home/baez/physics/General/Centrifugal/centri.html (1942 words)

	Phun Physics - Topics
		This force, known as the centrifugal force, depends on the mass of the object, the speed of rotation, and the distance from the center.
		The ball experiences the so-called centrifugal force, and it is the rope that provides the force to keep in moving in the circle.
		This force is known as the centrifugal force.
	phun.physics.virginia.edu /topics/centrifugal.html (576 words)

	Centrifugal Force -- from Eric Weisstein's World of Physics
		An outward-directed "fictitious force" exerted on a body when it moves azimuthally in a noninertial rotating reference frame.
		Centrifugal force is a fictitious force because it is a by-product of measuring coordinates with respect to a rotating coordinate system as opposed to an actual "push or pull."
		where a is the centrifugal acceleration, v is the tangential velocity, r is the distance from the center of rotation and
	scienceworld.wolfram.com /physics/CentrifugalForce.html (124 words)

	Huygens - On Centrifugal Force
		Whence we further conclude that the centrifugal forces of moving bodies that are unequal but are moved in equal circles at equal velocities are to one another as the weights, or solid quantities, of the moving bodies.
		Therefore, the centrifugal force by which the rotating body is held at H is to the weight of the body, or to the centrifugal force at D, as HK to DA.
		The centrifugal force at C will be equal to the weight of the body, and thus it will traverse the circumference described by radius DC at the velocity that the body would have acquired by perpendicular fall from the height of one-half DC, or its equal DA.
	www.princeton.edu /~hos/mike/texts/huygens/centriforce/huyforce.htm (6382 words)

	centrifugal force
		A force that must be included in the calculation of equilibria between forces in a spinning frame of reference, such as that of a rotating space station.
		In the rotating frame, the forces on a body of mass m are in equilibrium (as evidenced by the body staying at the same place) only if all forces acting on it, plus a centrifugal force mv²/R directed away from the center of rotation, add up to zero.
		The centrifugal force is often described as being a "fictitious force" in the sense that it is a reaction to the centripetal force needed to keep an object moving on a curved path.
	www.daviddarling.info /encyclopedia/C/centrifugal_force.html (178 words)

	Centrifugal force
		The centrifugal force is a fictitious force which means that it does not correspond to a force four vector.
		Where the centrifugal force and other fictitious forces are manifested in general relativity as forces of affine connection corresponding to a zero force four-vector is exactly derived as equations 6.3.33 on page 80 at
		This is an inertial force and as such it is a gravitational force according to Einstein's general relativity.
	www.physicsforums.com /showthread.php?p=168125 (1469 words)

	Centrifugal Force -- Inertial Forces (Site not responding. Last check: 2007-10-17)
		Two horizontal forces act on you that are equal in magnitude, but opposite in direction -- the centrifugal force and the pushing force by the car door (called a centripetal or center-seeking force).
		The sum of the two forces is zero and, therefore, the acceleration is zero (Newton's second law).
		he centrifugal force arises because a mass (i.e., that of the car and its occupants) is forced to follow a curved path, contrary to the mass's natural tendency to follow a straight path at constant speed (Newton's first law).
	observe.arc.nasa.gov /nasa/space/centrifugal/centrifugal2a.html (323 words)

	The Physics Classroom
		Therefore, circular motion must be characterized by an outward force." This misconception is often fervently adhered to despite the clear presentation by a textbook or teacher of an inward force requirement.
		But that did not require an outward or centrifugal force; it was merely the tendency of an object in motion to continue in motion in the same direction.
		To make the circular motion, there must be a net or unbalanced force directed towards the center of the circle in order to deviate the object from its otherwise tangential path.
	www.physicsclassroom.com /Class/circles/U6L1d.html (1249 words)

	Talk:Centrifugal force - Wikipedia, the free encyclopedia
		The centrifugal force may be understood as arising from the tendency of the stone to move in a straight line, or a path tangential to its position on the circle.
		We have the centripetal reaction force, and the centrifugal force.
		The measurable quantities are the centripetal force, exerted by the pivot on the ball, and the reaction force, exerted by the ball on the pivot.
	en.wikipedia.org /wiki/Talk:Centrifugal_force (14745 words)

	Frames of Reference: The Centrifugal force
		When calculating the motions of the oceans and the atmosphere, it is much easier to use reference points on the rotating Earth and add a centrifugal force to all equations.
		That is one reason why the observed acceleration g due to gravity departs from the average value of 9.81: at the equator, the centrifugal force must be subtracted from the force of gravity, while at the pole no centrifugal force exists.
		The rest arises because the Earth is not a perfect sphere: the centrifugal force of its rotation causes its equator to bulge out, making the surface there more distant from the Earth´s center and thus weakening the gravitational pull.
	www.phy6.org /stargaze/Sframes3.htm (846 words)

	Centrifugal Force -- Entry Page (Site not responding. Last check: 2007-10-17)
		ll kids have experienced the centrifugal force while riding on a merry-go-round, being in a car that goes around a curve, or making a sharp turn on a bike.
		It's not one of the fundamental forces, such as gravity and the electric force.
		We will distinguish between fundamental and inertial forces, introduce inertial and rotating reference frames, develop a descriptive understanding of centrifugal force, and present a rigorous mathematical derivation of this force in rotating reference frames starting with Newton's second law.
	observe.arc.nasa.gov /nasa/space/centrifugal/centrifugal_entry.html (194 words)

	TCS Daily - Centrifugal Force
		They run so fast and create such centrifugal force that they actually flex like bow strings along their axes (special joints or "bellows" on the rotor tubes control this flexing).
		The tremendous centrifugal force pushes heavier gas molecules (U-238) out to the walls of the rotor tube, while the lighter U-235 molecules tend to collect close to the shaft at the center.
		The significance of such large centrifuge plants is this: A relatively small fraction of such a plant's centrifuges, say 5000, could be used to produce enough highly enriched uranium to build three or four weapons a year.
	www.tcsdaily.com /article.aspx?id=071204B (1321 words)

	Lesson 34--Frames of Reference: The Centrifugal Force
		The centrifugal force is needed to describe the same motion, using coordinates, velocities and accelerations of a rotating frame of reference.
		The force on your body is the sum of gravity and the centrifugal force.
		The centrifugal force on the swing varies: it is greatest at the bottom of the swing, where motion is fastest, but zero when the swing briefly stops at the end points.
	www-istp.gsfc.nasa.gov /stargaze/Lframes2.htm (2170 words)

	Centrifugal Pump
		A centrifugal pump is classified into one of three basic categories The three centrifugal pump categories are radial flow, mixed flow, and axial flow.
		A mixed flow centrifugal pump is a centrifugal pump in which the pressure is developed partly by centrifugal force and partly by the lift of the impeller on the liquid.
		The axial flow pump is a centrifugal pump in which the pressure is developed by the propelling or lifting action of the vanes of the impeller on the liquid.
	www.grainger.com /production/info/centrifugal-pump.htm (359 words)

	Centripetal vs. Centrifugal Forces
		That force is defined as the CENTRIPETAL force.
		The term CENRTIFUGAL force appears to have come about because of a mistaken perception that there is a force that operates in the opposite direction as the CENTRIPETAL force.
		The "pull" that is felt by the ball on a string or by the hammer thrower is the force that has to be applied toward the center, to keep the ball from flying off tangentially, not radially.
	www.newton.dep.anl.gov /askasci/phy00/phy00305.htm (564 words)

	Radio Controlled Model Car Information - Centrifugal & Centripetal Force
		Following the publicity of the proposition that centrifugal force does not exist, a proposal which stated that we should instead use the term centripetal force to explain many of the things related to model cars, we have put together this article to try to explain this apparent about turn in thinking.
		Now that we have defined and demonstrated centrifugal force we can move onto centripetal force, a term the majority of model car owners will not be familiar with.
		As there is no sideways retaining force, the box continues on its straight path and is sent to the ground by the forces acting upon it.
	www.rctek.com /info_centrifugal_centripetal_force.html (692 words)

	Scigolf Presents Jack Kuykendall's Myths of Golf - #1 - The Centrifugal Force Myth
		One of the first places that you find the term centrifugal force used as the principle for producing velocity of the club head is in the book, Search For the Perfect Swing, by a group of British physicists.
		Based on several scientists stating that centrifugal force exists in a golf stroke, there is no reason to believe that someone not trained in physics would believe anything different.
		This is a perfect example of how centrifugal force can be built up around a relatively slow moving axis and transferred to another, much faster object.
	www.scigolf.com /scigolf/myths/myth1.htm (1084 words)

	Centrifugal force - Wikipedia, the free encyclopedia
		This term "reactive centrifugal force" is unheard-of in the mainstream physics literature, and this section may contain original research or unverified claims.
		For bodies that move with respect to the rotating frame it must be supplemented with a second pseudo force, the "Coriolis force":
		Since this centripetal force includes contributions from only pseudo forces, it has no reactive counterpart.
	en.wikipedia.org /wiki/Centrifugal_force (1740 words)

	Application to (Site not responding. Last check: 2007-10-17)
		The direction of the force points outward, away from the center of the circle.
		/r is the centrifugal force and points outward, away from the center of the circular path.
		Hence, the net force on the particle in the rotating reference frame is zero.
	www.grantchronicles.com /centrifugal.htm (248 words)

	Scigolf Presents Jack Kuykendall's Myths of Golf - #2 - The Scientific Explanation of Centrifugal Force
		The only force pulling on the ball is that of the string, pulling toward the center of the circle - a CENTRIPETAL force.
		A centrifugal force does not exist when one applies Newton's laws in an inertial frame.
		The centrifugal force is a fictitious force introduced to describe motion in a rotating, and therefore noninertial, reference frame."
	www.scigolf.com /scigolf/myths/myth2.htm (572 words)

	centripetal force and centrifugal force — Infoplease.com
		of the centripetal force is equal to the mass
		Mach's principle - Mach's principle [for E. Mach], assertion that the inertial effects of mass are not innate in a...
		Post-Millennial Postmodernism: On the Professing of Literature in the Centrifugal Age.
	www.infoplease.com /ce6/sci/A0811114.html (460 words)

	Centrifugal force (Site not responding. Last check: 2007-10-17)
		Question: I am writing this from my ap physics classroom and we were discussing centrifugal force and we wanted to know if it was real or not.
		This is called centripetal force and it is a real force.
		The centrifugal force comes from the fact that you were originally going straight with the car.
	www.newton.dep.anl.gov /askasci/phy99/phy99408.htm (190 words)

	AllRefer.com - centripetal force and centrifugal force (Physics) - Encyclopedia
		centripetal force and centrifugal force, action-reaction force pair associated with circular motion.
		The magnitude F of the centripetal force is equal to the mass m of the body times its velocity squared v
		More articles from AllRefer Reference on centripetal force and centrifugal force
	reference.allrefer.com /encyclopedia/C/centripe.html (459 words)

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