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 Mechanical advantage - Wikipedia, the free encyclopedia In physics and engineering, mechanical advantage (MA) is the factor by which a machine multiplies the force put into it. This allows even simple wheels with wooden axles running in wooden blocks to still turn freely, because their friction is overwhelmed by the rotational force of the wheel multiplied by the mechanical advantage. In this way, it differs from the ideal mechanical advantage, which is a sort of 'theoretical limit' to the efficiency. en.wikipedia.org /wiki/Mechanical_advantage   (917 words)

 [No title] Efficiency is the ratio of _________________ mechanical advantage to ___________________ mechanical advantage, stated as a percentage. In a lever, the ______________ mechanical advantage is the _____________ mechanical advantage. Using a sketch of the free pulley, illustrate why the mechanical advantage is 2. www.ent.ohiou.edu /~tscott/IT221/QuesWeek2F02.doc   (629 words)

 Mechanical Advantage of Pulleys The purpose of this lab is to measure the advantage and efficiency of different pulley arrangements. The AMA was found by calculating the slope of the line of best fit for the graph of load versus effort as seen in Figure 3 and Figure 4. The AMA values was higher for the system with more pulleys, however they were still close to their respective TMA values. stw.ryerson.ca /~rsingh/mechanical_advantage_of_pulleys.htm   (650 words)

 Simple Machines by Dave Joscelyne The mechanical advantage (MA) of a machine is the ratio between the output force it exerts and the input force that is furnished to it. A mechanical advantage greater than 1 means that the output force exceeds the input force, whereas a mechanical advantage less than 1 means that the output force is smaller than the input force. The ideal mechanical advantage of the lever is equal to the inverse ratio of the lever arms. filebox.vt.edu /users/djoscely/SmplMach/SmplMach.htm   (525 words)

 machine: Mechanical Advantage and Efficiency of Machines The mechanical advantage (MA) of a machine is the factor by which it multiplies any applied force. Ideally, the two ratios are equal, and it is simpler to calculate the ratio of the distance the effort moves to the distance the resistance moves; this is called the ideal mechanical advantage (IMA). Mechanical mining: new advances in machine technology and cutter design are extending applications in the mining of hard rock. www.infoplease.com /ce6/sci/A0859410.html   (725 words)

 HS PH551A2/MAC 2.2ab Mechanical advantage is expressed in one of two ways. The ACTUAL mechanical advantage is the number of times that a machine multiplies the effort force. The IDEAL mechanical advantage calculates the mechanical advantage without friction and weight of the lever being considered. www.utm.edu /departments/ed/cece/fifth/hph551a2.htm   (1092 words)

 [No title] The theoretical mechanical adantage is the reciprocal of the displacement ratio. The reciprocal of the displacement ratio is its theoretical mechanical advantage. For the machines which cannot be fully disassembled, measure the displacement ratio and mechanical advantage, and calculate the efficiency. www.lhup.edu /~dsimanek/scenario/labman1/machines.htm   (1306 words)

 Mechanical gyroscopes (from gyroscope) --  Encyclopædia Britannica   (Site not responding. Last check: 2007-10-08) Mechanical gyroscopes are based on a principle discovered in the 19th century by Jean-Bernard-Léon Foucault, a French physicist who gave the name gyroscope to a wheel, or rotor, mounted in gimbal rings (see figure). It is usually the ratio of the power delivered by a mechanical system to the power supplied to it, and, because of friction, this efficiency is always less than one. Mechanical energy is constant in a system that has only gravitational forces or in an otherwise idealized system—that is, one lacking dissipative forces, such as friction and air resistance, or one in which such forces can be... www.britannica.com /eb/article-2950?tocId=2950   (896 words)

 Gears used to increase mechanical advantage Now, figure the mechanical advantage for the other part of the machine-a simple wheel-and-axle arrangement consisting of the crank arm and the drum. The total, or overall, theoretical mechanical advantage of a compound machine is equal to the product of the mechanical advantages of the several simple machines that make it up. Therefore, the overall theoretical mechanical advantage of the winch is 6 x 2, or 12. www.tpub.com /machines/6d.htm   (458 words)

 Pulleys and Mechanical Advantage I predict that in my tests I will find that the actual mechanical advantage of the pulleys will not be the same as the calculated mechanical advantage because of the friction on the pulleys. Mechanical advantage is the sacrificing of distance for effort. The friction affected the mechanical advantage because as my graph states the control group has the very worst mechanical advantage because the friction wasn't reduced in any way and it was most affected by friction. www.qacps.k12.md.us /cms/sci/PROJALE1.HTM   (1503 words)

 [No title] The student will determine the mechanical advantage and the efficiency of the inclined plane as a simple machine. The use of smaller forces scientists call "mechanical advantage" and there are 2 possible definitions. advantage] The second is related to the "savings" in force and is; AMA = (output force)/(input force) [actual mechanical advantage] The "efficiency" with which the machine converts input work into useful output work is: efficiency = AMA/IMA In this activity a low efficiency is assured by dragging the mass along the incline without any wheels. www.mtsu.edu /~pdlee/public2_html/planeSMac.html   (1060 words)

 First Class Levers If the load arm and effort arm were equal in length, an effort equal to the load would be required (10 pounds of effort would lift 10 pounds of load). When the effort arm is longer than the load arm, the effort is less than the load and we have mechanical advantage – because the effort travels farther than the load. Mechanical advantage (MA) is a value that tells you the number of times a machine increases the applied force. www.sciencebyjones.com /first_class_levers.htm   (169 words)

 MA Incline IMA (the Ideal Mechanical Advantage) equals AMA (the Actual Mechanical Advantage) is observed when the system has no friction. Calculate the AMA for the incline above in the data table. The greater the AMA the better the machine serves its role to reduce the effort force to perform an amount of work at the expense of distance. www.hazelwood.k12.mo.us /~grichert/sciweb/amaramp.htm   (776 words)

 Chapter 4 – Work and Machines · The mechanical advantage of a machine is obtained by dividing the output force by the input force. · A machine’s mechanical advantage is the number of times a force exerted on a machine is multiplied by the machine. · Mechanical advantage – The number of times the force exerted on a machine is multiplied by the machine. www.bristolaggie.mec.edu /school/Velozo/Chapter4.htm   (707 words)

 simplemachines Motion-multiplying machines have a mechanical advantage less than one AMA<1 which means what is gained in motion (distance or speed) is lost in force. When accelerating or climbing a hill, the rider increases the mechanical advantage to increase the force the wheel exerts on the road. When going at high speed on a level road, less force is needed, and the rider decreases the mechanical advantage to reduce the distance the pedals must move for each revolution of the wheel. homepages.utoledo.edu /MPICKET/simplemachines.htm   (1990 words)

 Machine Quiz Name: _____________________ 2/12/02 If the actual pull was 67 pounds, what would be the actual mechanical advantage? One simple machine has a mechanical advantage of 4 and an efficiency of 75%. It is connected in series with  another simple machine with a mechanical advantage of 8.0 and an efficiency of 67%. home.cvc.org /physics/Physics_Machine_TEST.htm   (397 words)

 Mechanical Advantage of Pulleys   (Site not responding. Last check: 2007-10-08) A system of pulleys is used to lift heavy loads by the mechanical advantage of increasing the length of travel of the pull and decreasing the load. The mechanical advantage of a system of pulleys is equal to the number of ropes that support the moveable pulley, less any friction on the pulley. The amount of friction is the difference between the actual load measured and the calculated load. info.lu.farmingdale.edu /~betzja/crane/pulley.html   (214 words)

 AGRISCIENCE EXERCISE Slowly pull downward on the spring scale and record the amount of force required to raise the plunger of the large syringe. Actual Mechanical = Force exerted by large plunger (wt. Since we are interested in the mechanical advantage produced by the hydraulic system only, the "2" is included in the denominator to cancel out the lever's mechanical advantage. www.uark.edu /depts/aeedhp/agscience/MECHADV.htm   (528 words)

 mechanical advantage --  Encyclopædia Britannica The theoretical mechanical advantage of a system is the ratio of the force that performs the useful work to the force applied, assuming there is no friction in the system. In practice, the actual mechanical advantage will be... Contains discussions of John Napier, the abacus, and the slide rule and descriptions of numerous mechanical calculators, including early machines and their inventors, such as the Stepped Reckoner from Gottfried Wilhelm Leibniz, the Arithmometer from Charles Xavier Thomas de Colmar, and the pin-wheel type, invented by Willgodt T.Odhner in 1878. www.britannica.com /eb/article-9051699?tocId=9051699&query=mechanical   (906 words)

 mechadv Use the software’s formula-input capability to calculate both ideal and actual mechanical advantages for each of the three resistance masses, using correct formulas for each; average the data for each system. Make a chart to visually compare ideal and actual mechanical advantage; recognize that the two are only slightly different and analyze reasons for that difference. Examine the spreadsheet results and pulley diagrams to look for a pattern between mechanical advantage and the number of supporting ropes in the pulley system. www.wside.k12.il.us /tms/Science/mechadv.html   (420 words)

 [hpv] Mechanical Efficiency Machines may be used to convert chemical energy (a gasoline engine),electric energy (an electric motor), or mechanical energy (a hydraulic jack) but only the conversion of mechanical energy will be considered in this discussion. Therefore, A.M.A. The efficiency of a machine is a measure of the useful work produced, and it is usually expressed as a percentage. The useful work [ed., a force exerted through a distance] produced is always less than the energy input, and the loss, if no energy is stored in the machine, is caused by friction. www.ihpva.org /pipermail/hpv/2000-April/004841.html   (379 words)

 [No title]   (Site not responding. Last check: 2007-10-08) Mechanical advantage is a value that tells the number of times a machine increases the applied force. The ideal mechanical advantage of a pulley is equal to the number of supporting ropes. 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)

 Mr. Smith TeacherWeb Physics Notes   (Site not responding. Last check: 2007-10-08) Notice that this is where you actually draw any logical conclusions. * Conclusion: A misnomer, this concluding section of your report should actually be written as a summary of perhaps 6 to 8 sentences. It should show that what you did met your objective and hit the highlights of what you did and what you found out. teacherweb.com /CA/Leigh/Smith/h4.stm   (1569 words)

 Machine Quiz Name: _____________________ 2/12/02 If the actual weigh that could be lifted was only60.0 N, what would be the the actual mechanical advantage? One simple machine has a mechanical advantage of 3 and an efficiency of 75%. It is connected in series with  another simple machine with a mechanical advantage of 8.0 and an efficiency of 75%. home.cvc.org /physics/machinetestans.htm   (709 words)

 SIMPMACHINES   (Site not responding. Last check: 2007-10-08) machine lever fulcrum mechanical advantage actual mechanical advantage ideal mechanical advantage pulley wheel and axle inclined plane wedge compound machine machine efficiency effort force resistance force screw Your teacher will teach you how to find the IMA and AMA after you complete the lab. How did the people of ancient civilization use what we have learned in the unit to leave their legacy. www.geocities.com /rokolo47/SIMPMACHINES.htm   (308 words)

 [No title] Estimate the ideal and actual mechanical advantage of each part and of the whole machine. The actual mechanical advantage of the entire compound machine. Predict what the actual mechanical advantage of the entire machine is, and where work is lost. homepage.mac.com /richtherrn/physics/compoundmachines.doc   (714 words)

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