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Topic: Effort force

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Actual mechanical advantage

Ideal mechanical advantage

Mechanical advantage

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	SMART96 FORCE
		The force applied to to the machine is called work input or effort force.
		The work output is used to move the "force" you and the machine are trying to move or overcome.
		The number of times the machine multiplies the effort force is called the Mechanical Advantage.
	www.ed.uri.edu /SMART96/ELEMSC/SMARTmachines/Force.html (275 words)

	MSN Encarta - Lever
		Levers affect the effort, or force, needed to do a certain amount of work, and are used to lift heavy objects.
		To move an object with a lever, force is applied to one end of the lever, and the object to be moved (referred to as the resistance or load) is usually located at the other end of the lever, with the fulcrum somewhere between the two.
		In practical terms, the MA is the distance of the force to the fulcrum divided by the distance of the load to the fulcrum.
	encarta.msn.com /encyclopedia_761567646/Lever.html (717 words)

	Encyclopedia: Effort force
		In physics, effort force is the force used to move an object over a distance.
		Effort force is also a component in the following equation, In physics, resistance force is the force which an effort force must overcome in order to do work on an object.
		Effort force, like most other forces, is measured in newtons or the pound-force.
	www.nationmaster.com /encyclopedia/Effort-force (245 words)

	[No title]
		In a second-class lever, the resistance force is between the effort force and fulcrum.
		In a third-class lever, the effort force is between the resistance force and the fulcrum.
		The fulcrum is between the effort force and the resistance force on a first-class lever.
	members.cox.net /mr.graham/Assignments_files/work_power_simple_machines_notes.txt (1060 words)

	Science 9 (D (Site not responding. Last check: 2007-09-06)
		A theoretical effort force of 600 N placed 4 m from the fulcrum is used to move a load of 3 kN.
		A force of 300 N is applied to the rim of the axle.
		An effort force of 30 kN is used to raise a load 12 m.
	www3.telus.net /byngscience/science09/Sc09Physics/19_2_ws.htm (476 words)

	Archived Newsletter: To Infinity and Beyond
		The force (F) (either the load or the effort) multiplied by the length of the lever arm (d) (distance from the fulcrum to the point at which the force acts) is what tends to rotate a lever on its fulcrum.
		Similarly, if one of the forces is moved to a new position half as far from the fulcrum, a force twice as large must be applied at the new position to achieve balance.
		But if you move the position at which the effort is applied farther from the fulcrum, and apply the same amount of force, force times distance on the effort side produces more torque than force times distance on the load side.
	www.lhs.berkeley.edu /foss/newsletters/archive/FOSS13.Infinity.html (996 words)

	Simple Machines
		Second, the effort force is applied parallel to the slope of an inclined plane, while the effort force is applied perpendicular to the direction of travel when using a wedge.
		When the fulcrum is closer to the resistance force (resistance arm less than effort arm), the effort force is increased, but there is a corresponding decrease in both the distance the resistance force moves and the speed with which it moves.
		With a third-class lever, the effort force is applied between the fulcrum and the resistance force.
	www.engineering.usu.edu /jrestate/workshops/machines/machines.php (3977 words)

	MSN Encarta - Print Preview - Pulley
		Work is the product of the effort, or force, applied to an object multiplied by the distance the force is applied.
		MA is generally determined by dividing the distance the effort travels by the distance the load travels.
		The primary benefit of a single pulley is to change the direction of the force or to move a load to a point (such as the top of a flagpole) that cannot be reached by the user.
	encarta.msn.com /text_761570653___6/Pulley.html (685 words)

	MACHINES (Site not responding. Last check: 2007-09-06)
		In this case, as in A of figure 7-24, the force is applied on one side of the fulcrum, and the resistance to be overcome is applied to the opposite side; hence, this is a first class lever.
		Referring to figure 7-26, the length of the wheelbarrow handles from the axle of the wheel (which is the fulcrum) to the grip is 4 feet.
		Thus, the force of the pull on the rope must be equal to the weight of the object being lifted.
	avstop.com /AC/apgeneral/MACHINES.html (2205 words)

	Effort force -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-09-06)
		In (The science of matter and energy and their interactions) physics, effort force is the ((physics) the influence that produces a change in a physical quantity) force used to moving an object over a (The property created by the space between two objects or points) distance.
		Effort force is a component in the following equation,
		Effort force, like most other forces, is measured in (A unit of force equal to the force that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogram; equal to 100,000 dynes) newtons or the (Click link for more info and facts about pound-force) pound-force.
	www.absoluteastronomy.com /encyclopedia/e/ef/effort_force.htm (155 words)

	Ch 10 Vocabulary (Site not responding. Last check: 2007-09-06)
		The ratio of effort distance to resistance distance is a machine's __.
		The ratio of resistance force to effort force is a machine's -.
		that the resistance force of one machine becomes the effort force of the second machine is a(n) -.
	classroom.kleinisd.net /webs/sdurio/upload/ch_10_vocab.htm (212 words)

	Lever [Article] - World Book Online Americas Edition (Site not responding. Last check: 2007-09-06)
		A force of effort is applied at one end of the rod to lift a load placed at the other end.
		The effort multiplied by the length of the effort arm equals the load multiplied by the length of the load arm.
		The law of levers may be stated simply by saying that the moment of the lifting force must equal the moment of the force due to the load.
	web.dps.k12.va.us /ParkAve/Lever.htm (702 words)

	Questions 1-4 are based on the following passage and diagrams (Site not responding. Last check: 2007-09-06)
		The effort force is not enough to overcome the resistance force.
		The effort force is not enough to raise the fulcrum.
		The effort force is between the fulcrum and the resistance force.
	copland.udel.edu /~angelgrl/leverquiz.htm (260 words)

	lever_1
		Plot the load [units N] on the ordinate axis of a graph and plot the the effort force [in N] on the abscissa of the graph.
		The force may be reduced, but - if the force is reduced - there is a "cost" in terms of greater distance.
		The DISTANCE through which the force must be exerted has fallen; that might be advantageous if there were only a small region through which the the force could be exerted [mechanics, plumbers and electricians know about tight spots!!].
	www.mtsu.edu /~pdlee/public2_html/lever_11.html (809 words)

	Simple Machines Jan 2002 Science Explorations Newsletter
		Since the force needed to push an object up an inclined plane is less than the force needed to lift the same object, inclined planes reduce the amount of force necessary to do a job.
		An example of the force being applied to the axle is on a Ferris Wheel: the wheel spins because of the force on the axle.
		The effort force that is required to lift the load is reduced as the effort location is moved away from the fulcrum.
	www.hometrainingtools.com /articles/simple-machines-science-explorations-newsletter.html (1985 words)

	Glencoe Online Science Quiz Chapter
		The pulley changes the distance over which the effort force is applied.
		The force exerted is reduced compared to the resistance force.
		What is the mechanical advantage of a lever if the effort force is 2 N and the resistance force is 8 N? a.
	www.glencoe.com /qe/science.php?qi=2790 (423 words)

	Kinesiology II
		The resistance (load) force and the effort force are on the same side of the axis of rotation
		Law of Inertia: An object at rest will remain at rest unless it is acted upon by an external force; an object in motion will remain at a constant velocity unless acted upon by an external force; the greater the mass, the greater the inertia
		Note: the longer the effort lever arm, the less the force required – why you use a spoon to pry open a can, why a mole has a very long olecranon process, why you would never carry a heavy box with straight arms
	jan.ucc.nau.edu /~pe/exs190web/190kines2.htm (1178 words)

	Simple machines (Site not responding. Last check: 2007-09-06)
		There is a generic equation that will get you the mechanical advantage for any simple machine: find the force put into the machine and the force gotten out of the machine.
		Class levers (effort force between resistance force and fulcrum): MA always < 1.
		The mechanical advantage of a wheel and axle depends upon which part has the effort force applied to it.
	www.csubak.edu /~ckloock/sci316s03/handouts/simplemachines.htm (792 words)

	General Intelligence and Seed AI (Site not responding. Last check: 2007-09-06)
		Developing such a seed AI may require a tremendous amount of programmer effort and programmer creativity; it is entirely possible that a seed AI is the most ambitious software project in history, not just in terms of the end result, but in terms of the sheer depth of internal design complexity.
		Newton took a single assumption (masses attract each other with a force equal to the product of the masses divided by the square of the distance) and churned through some calculus to show that, if an apple falls towards the ground at a constant acceleration, then this explains why planets move in elliptical orbits.
		When new situations are encountered, new situations that force the extension of the concept, the mind can switch from the optimized method to the methods that reflect underlying causes and underlying substrate.
	www.singinst.org /GISAI.html (18735 words)

	Machines: Making Work Easier
		To lift a 540-N load a total of 12.0-m, you turn a crank with a force of 110-N pushing it through a distance of 72-m.
		A pole is a total of 2-m long and is pivoted 30 cm from a rock that acts as the fulcrum.
		On a ramp 2.5-m long and 0.5-m high, a force of 420-N is being used to push a loaded cart.
	www.lcusd.net /lchs/mewoldsen/MACHINES.htm (567 words)

	SIMPLE MACHINES, WORK, FORCE AND ENERGY (Site not responding. Last check: 2007-09-06)
		A. LIFTING - The Force needed is equal to the weigh of the barrel multiplied by the height of the platform.
		Effort Force is applied to a large Wheel to Turn the Smaller Axle.
		Effort is exerted on one of the gears, causing the other gear to turn.
	www.sirinet.net /~jgjohnso/simple.html (2286 words)

	Articles - Mechanical advantage (Site not responding. Last check: 2007-09-06)
		a barn roof rafter, and a pulling force is applied upward to the other end with the two lengths parallel.
		In this situation the distance the lifter must pull the rope becomes twice the distance the weight travels, allowing the force applied to be halved.
		also, the Force exerted IN to the machine Ã— the distance moved IN will always be equal to the force exerted OUT of the machine Ã— the distance moved OUT.
	www.seekj.com /articles/Mechanical_advantage (742 words)

	New Effort to Force Armies to Clean up Unexploded Bombs and Rockets
		The opening shots were fired Monday in a battle to force armies to clean up cluster bombs, rockets, mortars, and other ordnance that they have dropped on their enemies but which have not exploded.
		A report calling for new efforts to clear up the lethal litter of unexploded ordnance (UXO)--which kills as many people as landmines but which does not fall under any legal obligation on post-conflict clearance--was released on the third anniversary of the start of NATO bombing in the troubled Serbian province of Kosovo.
		We are making such material available in our efforts to advance understanding of environmental, political, human rights, economic, democracy, scientific, and social justice issues, etc. We believe this constitutes a 'fair use' of any such copyrighted material as provided for in section 107 of the US Copyright Law.
	www.commondreams.org /headlines02/0326-01.htm (728 words)

	The Shaping Effects Of Operational Deep Air Support
		effort, were available in theater to support each of the campaigns.
		As a result, May was the heaviest month of the pre-invasion DAS effort.
		forces significantly degraded the enemy’s ability to conceal, camouflage, and disperse his forces.
	www.globalsecurity.org /military/library/report/1995/VAW.htm (3425 words)

	Simple Machines/Technology 5A1
		This means whatever amount of force we use on the machine is multiplied by the machine.
		Less effort is needed with an inclined plane, because an object is moved a longer distance on a slanted surface.
		It requires a small effort force in turning to overcome a large resistance force.
	www.utm.edu /departments/cece/old_site/fifth/5A1.shtml (1096 words)

	Physics Concepts: Lever
		Levers are comprised of a rigid bar (lever arm) a pivot point (fulcrum), a load force, and an effort force.
		The magnitude of this torque is dependant on the magnitude of the force and its distance from the fulcrum.
		A third class lever has the effort force located between the fulcrum and the load force on the lever arm.
	www.ceeo.tufts.edu /robolabatceeo/k12/classroom/lever.asp (221 words)

	Chronology - 1958 - Quarter 1
		Johnson indicated that the Air Force would be assigned the task, and the purpose of the conference was to produce a rough-draft proposal.
		For example, in the basic studies category effort had been expended on the study of orbits and orbit control, space physical characteristics, configuration studies, propulsion system research, human factors, structures and materials, satellite instrumentation, range requirements, and noise and vibration during reentry and exit.
		The Air Force Ballistic Missile Division was authorized by ARPA to carry out three lunar probes with a Thor-Vanguard system, and lunar probes utilizing the Jupiter-C rocket were assigned to the Army Ballistic Missile Agency.
	www.astronautix.com /chrono/19581.htm (4236 words)

	[No title] (Site not responding. Last check: 2007-09-06)
		Effort force is exerted on the other end of the rope.
		Hang the mass to be used as the resistance from the force sensor.
		Be sure to discuss the following: resistance forces, effort forces, number of ropes, ideal and actual mechanical advantage, efficiency, distance moved by the effort force vs. distance moved by the resistance force, and work input and output.
	www.k12.de.us /science/scivan/InvestigatingPulleys11298.doc (2158 words)

	U.S. Air Force Selects Microsoft Software and Services In Technology Transformation Effort to Increase Security: ...
		Part of the service's One Air Force, One Network initiative, the agreement is intended to simplify the acquisition process while meeting demands for stringent enterprisewide cybersecurity requirements, timely distribution of software updates and enterprise configuration management.
		Also core to this strategic agreement is a highly proactive effort by the Air Force and Microsoft to jointly work to solve security concerns across the Air Force's global enterprise.
		Through Software Assurance, Air Force personnel are also provided with desktop licenses for use at work and home with the Home Use Program, which offers personnel the option to acquire a licensed copy of select Office desktop applications for use on a single home computer at a nominal cost.
	www.microsoft.com /presspass/press/2004/nov04/11-19MSDellAirForcePR.mspx (993 words)

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