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How to calculate actual mechanical advantage

AMA (Actual Mechanical Advantage) Calculator - Calculator

How to calculate an actual mechanical advantage. First, determine input force. Measure the input force that is being put into the system. For this example, we will say the system is a pulley system and the input force is 40N A mechanical advantage is a form of calculation that measures the amplified force taken by the mechanical system. It gives the ratio between the force applied to the load and the force needed to overcome the given force. It is a unitless expression since the two ratio quantities are the force (b) The ideal mechanical advantage equals the length of the effort arm divided by the length of the resistance arm of a lever. In general, the IMA = the resistance force, Fr, divided by the effort force, Fe. IMA also equals the distance over which the effort is applied, de, divided by the distance the load travels, dr. How do you calculate work. The actual mechanical advantage (AMA) is the mechanical advantage determined by physical measurement of the input and output forces. Actual mechanical advantage takes into account energy loss due to deflection, friction, and wear Mechanical advantage is the ratio of the output force to the input force, so it can be represented by the equation: Note that this equation represents the actual mechanical advantage of a machine. The actual mechanical advantage takes into account the amount of the input force that is used to overcome friction

Mechanical Advantage Formula - Definition, Formula And

The real mechanical advantage would be defined as the ratio of resistance force (in this case, the weight) to the actual effort force used: RMA = resistance force/ actual effort force Summary | The formula of MA of an inclined plan Mechanical advantage for Inclined plane, or for that matter any of the machine, is given as M A = X / Y X = Ratio of the force you have to apply for meeting the objective without using the tool. Y = Force you have to apply for meeting your objective using the tool actual mechanical advantage = resistance force effort force AMA = FR = 35 N = 2.3 FE 15 N 2 35 N 5b. Calculate the AMA of the ramp below. Show your work Mechanical Advantage of a Pulley Calculator. When the small input force applied on a machine increases the magnitude of the output force, it produces mechanical advantage. Pulley is a wheel on a shaft used for the movement of a belt along its circumference. The movement can be forward or backward in order to lift an object

What are the two formulas for mechanical advantage

welcome back will now use a little bit of what we've learned about work and energy and the conservation of energy and apply it in two simple machines and we'll learn a little bit about mechanical advantage so I've drawn a simple lever here and then you've probably been exposed to simple Leivers before they're really just kind of like a seesaw this place where the lever pivots this is called. 2. Calculating mechanical advantage in practice. The efficiency (E) of a haul system indicates the force multiplier factor that you can exert on the rope.For example, if you are able to pull 20 kg maximum on a rope with your bare hands, a 3:1 haul system will enable you to raise a 60 kg mass.This reduction is obtained by increasing the amount. IMA = L/t. In the case of a screw, the mechanical advantage is the ratio of the circumference of the screw to the distance traveled after each revolution. In other words, IMA = 2*pi*L / P, where L is the radius of the screw and P is the distance traveled after each revolution. The actual benefits of a simple machine when compared to its ideal. The actual mechanical advantage (AMA) is the mechanical advantage determined by physical measurement of the input and output forces. Actual mechanical advantage takes into account energy loss due to deflection, friction, and wear. The AMA of a machine is calculated as the ratio of the measured force output to the measured force input Calculate the mechanical advantage of a lever. In the previous chapter, you learnt that you can calculate a quantity to say exactly how big or smallthe mechanical advantage is. This quantity is a ratio.It is calculated by dividing the output force by the input force. A ratio of 1 to 4 is written as 1:4. This is simply another way to write the.

Mechanical Advantage Calculator The force required for the motion of a load can be reduced using simple machines, the result of usage of such simple machines is the mechanical advantage which is the ratio of load and effort. In this calculator, the mechanical advantage can be calculated using load and effort and vice versa

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Actual mechanical advantage is the ratio of the output force and input force. (2). Ideal Mechanical advantage : Ideal mechanical advantage is the ratio of the effort arm and resistance arm. ahlukileoi and 2 more users found this answer helpful. heart outlined. Thanks 1. star. star Introduction to simple machines, mechanical advantage and moments. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/wor.. Of all simple machines, mechanical advantage is easiest to calculate for pulleys. Simply count the number of ropes supporting the load. That is the IMA. Once again we have to exert force over a longer distance to multiply force. 1 rope is required because the actual mechanical advantage is 3.80 Mechanical Advantage. The discussion about raising explained that mechanical advantage is a measurement of how much your rope and pulley system leverages the force than you put into it. This page explains a few terms relating to mechanical advantage. The following pages explain how to calculate mechanical advantage.. A system's mechanical advantage is expressed as a ratio using a colon Mechanical advantage is the ratio of distance of input arm from fulcrum to distance of output arm from fulcrum. Mechanical advantage is the ratio of distance of input arm from fulcrum to distance of output arm from fulcrum. This ratio is the same as the ratio of output force to input force. Or in other words, product of output force and distance of output arm from fulcrum is same as the.

Ideally, the two ratios are equal, and also it is simpler to calculate the ratio of the distance the effort moves to the distance the resistance moves. In any real machine, some of the efforts is used to overcome friction also. Therefore, the ratio of the resistance force to the effort called the actual mechanical advantage which will be less Calculating Mechanical Advantage At the conclusion of this exercise, you will be able to do the following: 1. Identify the six simple machines. 2. Calculate the slope, ideal mechanical advantage (IMA), actual mechanical advantage (AMA), efficiency, ideal effort force, and actual effort force of an inclined plane. 3. Calculate the slope, ideal. Actual Mechanical Advantage (AMA) Calculator. Online physics force calculator to calculate actual mechanical advantage (AMA) from input and output forces The Mechanical advantage formula is defined as the ratio of load to the effort. It is a unit-less quantity is calculated using mechanical_advantage = Load / Effort.To calculate Mechanical advantage, you need Load (F) and Effort (P).With our tool, you need to enter the respective value for Load and Effort and hit the calculate button

AMA Calculator Calculate Actual Mechanical Advantage

The calculator determines the mechanical advantage of a non-ideal simple machine. Example: A force of 50 N was applied to a simple machine, which lifted a load of 465 N. Calculate the ideal and actual mechanical advantage of this simple machine if its efficiency is 75% This is referred to as a 2 to 1 mechanical advantage, or 2:1 MA. We can calculate it by simply counting how many parts, or legs, of rope are acting on the pulley: in this case there are 2, so we calculate a 2:1 advantage. It's a very simple concept, but the implications are amazing

Mechanical Advantage ( Read ) Physics CK-12 Foundatio

  1. Inclined Plane is one of the six simple machines and one of the most commonly used one. Mechanical advantage for Inclined plane, or for that matter any of the machine, is given as [math] MA = X/Y [/math] X = Ratio of the force you have to appl..
  2. Mechanical advantage is a term used to describe the ratio of an output force to the input force. In other words, the amount of output with a given effort. Using physics and leverages certain mechanical features can be constructed to output a larger force that was input. In the case of a lever, the mechanical advantage is directly related.
  3. Ideal Mechanical Advantage versus Actual Mechanical Advantage Sample problems 1 and 2 describe a form of mechanical advantage called ideal mechanical advantage. Th e ideal mechanical advantage is what the mechanical advantage would be if all of the input force could be converted into an output force. However, this is never possible i

Mechanical Advantage of Inclined Plane with formula

  1. It is different for different methods to calculate it. It is the use of a mechanical tool to gain an advantage as to force required. For example if you wanted to lift a car with a lever you would have an advantage according to the length of the le..
  2. es the theoretical mechanical advantage of a pulley or a simple set (system) of pulleys. It also deter
  3. Mechanical Advantage is the ratio of load to effort. Pulleys and levers alike rely on mechanical advantage. The larger the advantage is the easier it will be to lift the weight. In other words, you would need to put less effort into lifting the weight. For a single pulley that is fixed to the ceiling, we would have an advantage of one

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. Ideally, the device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force.The actual mechanical advantage (AMA) is the mechanical advantage determined by physical measurement of the input and output. Since the two factors in the mechanical advantage formula are of the same units (as both are the forces) implies that the mechanical advantage is a dimensionless parameter. The efficiency of any machine estimates the extent to which friction and other factors are decreasing the actual work output of the machine from its theoretical maximum value To find the ideal mechanical advantage of an inclined plane, simply divide the length along the plane by its height: IMA=L/H. The actual mechanical advantage is Using materials of your choice in the laboratories, construct an inclined plane, calculate its ideal mechanical advantage, and measure the actual mechanical advantage. Materials Neede The mechanical advantage (MA) of a machine is the factor by which it multiplies any applied force. The MA may be calculated from the ratio of the forces involved or from the ratio of the distances through which they move. Ideally, the two ratios are equal, and it is simpler to calculate the ratio of the distance the effort moves to the distance. Calculating Mechanical Advantage. STUDY. Learn. Flashcards. Write. Spell. Test. PLAY. Match. Gravity. Created by. Bess_Trainum. Key Concepts: Terms in this set (9) What is the actual mechanical advantage of a lever if the input force is measured as 37 N and the output force is measured as 185 N

Mechanical advantage and efficiency

Distance Mechanical Advantage. by Ron Kurtus (28 June 2016) A machine's distance mechanical advantage shows the effectiveness of the machine in moving an object a greater distance than the input distance. The equation for the distance mechanical advantage is the output distance divided by the input distance • Calculate the actual mechanical advantage of inclined planes and pulley systems • Compare actual and ideal mechanical advantage Getting Started • Which is the best machine: an inclined plane, a pulley or a lever The ideal mechanical advantage is the mechanical advantage of a machine with no inefficiencies. The actual mechanical advantage is the mechanical advantage of a real machine with all of the inefficiencies. The actual mechanical advantage is the ratio of the output force to the input force Calculate the actual mechanical advantage of your wheel and axle system if the resistance force is applied to the wheel. Formula. Substitute / Solve. Final Answer. AMA=Fr/Fe. 1.07/1.716.62. Calculate the efficiency of the wheel and axle system when the resistance force is applied to the wheel. Formula. Substitute / Solve

Solved: What Is The Mechanical Advantage Of The Pulley Sys

Thus, the ratio of the resistance force to the effort, called the actual mechanical advantage (AMA), is less than the IMA. The efficiency of any machine measures the degree to which friction and other factors reduce the actual work output of the machine from its theoretical maximum The ideal mechanical advantage is the mechanical advantage of a machine with no inefficiencies. The actual mechanical advantage is the ratio of the output force to the input force. The ideal mechanical advantage is the mechanical advantage in an ideal world. It equals the input distance divided by the output distance 2. Calculate: Actual Mechanical Advantage (AMA) AMA= Force Resistance/Force Effort AMA= 50 lbs/15 lbs AMA= 3.33 3. Static Equilibrium Calculations Due to friction, the actual mechanical advantage is slightly lower. Many confined space operations require vertical entry. When we build a mechanical advantage system to move a load in this situation, a simple Block and Tackle system such as a 2:1 Ladder Rig or a 4:1 with double pulleys at the top and bottom can be used

Force to friction Friction to mass Actual Mechanical Advantage The actual mechanical advantage is the mechanical advantage that a machine provides in a real situation. Ideal Mechanical Advantage The ideal mechanical advantage is the mechanical advantage of a machine without friction Introduction to Mechanical Advantage. This video shows how to calculate the IMA of a lever by three different methods: (1) from effort force and resistance force; (2) from the lengths of the lever arms, and; (3) from the distance over which the force is applied and the distance the load moves. Click to view content Mechanical Advantage is given as a ratio of the force a machines gives out to the force that it receives. Simply put, it is the ratio of output force to input force: We are given that: OF = 60 N. IF = 15 N. Hence, the Mechanical Advantage of the lever is: It is a ratio so it has no unit Get Free 14 3 Mechanical Advantage And Efficiency Answer Key Academia.edu This section describes mechanical advantage and efficiency and how to calculate these values. It also discusses ways to maximize mechanical advantage and actual _____ _____ of a machine is always less than the ideal mechanical advantage This Crafty Rope trick (CRT) can give you up to about a 6 to 1 theoretical mechanical advantage, with nothing more than a cordelette and a few carabiners. (With friction, it works out to be a bit less than 2:1.) On a longer big wall, with bigger loads, using mechanical advantage to lift your haul bags can be extremely helpful

Calculate the actual Mechanical Advantage of the pulley system using the following equation: How does this compare to the theoretical MA from above? Results. In general, were the theoretical mechanical advantages similar to the actual ones? Discussion 14. 3 Mechanical Advantage and Efficiency Mechanical Advantage Actual Mechanical Advantage The mechanical advantage determined by measuring the actual forces acting on a machine is the actual mechanical advantage. The actual mechanical advantage (AMA) equals the ratio of the output force to the input force

Our mechanical advantage is simply the ratio of the distance the lifter's hands are from the fulcrum (A+B in the graphic below) divided by the distance the weight/resistance (W) is from the fulcrum (A). The machine in my gym has a 4:1 mechanical advantage. Let's say a trainee selects 200 pounds and rattles off a nice set of ten reps Actual Mechanical Advantage 2. a. Actual machines have friction. They are not as have as high of a mechanical advantage as ideal machine because some of the effort is lost in overcoming friction. b. Actual Mechanical Advantage has the symbol of AMA. c. Actual Mechanical Advantage can be determined by the following equation These effects cause a decrease in the actual mechanical advantage of these tools. This leads to inefficiencies in converting the input force to the output force of the tool. The actual efficiency of these machines can be calculated by taking the ratio between actual mechanical advantage to the ideal mechanical advantage To calculate the mechanical advantage of a pulley, divide the output force, the weight of the load by the input force, the force needed to lift the load. One Fixed, One Movable Pulley While using only one pulley requires you to use only half the force it would take to lift a load by hand, a fixed pulley combined in a system with a movable.

How to find an inclined plane's actual mechanical

  1. should be mechanically mechanical advantage is what it actually is in terms of leverage or work done, the ramp mechanical advantage and efficiency description this is a lab on calculating ideal and actual mechanical advantage of an inclined plane it also asks students to calculate the efficiency o
  2. Mechanical Advantage And Efficiency Answer Key14 3 Mechanical Advantage describes mechanical advantage and efficiency and how to calculate these values. It also discusses ways to maximize mechanical advantage and efficiency. (PDF) Section 14.3 Mechanical Advantage actual _____ _____ of a machine i
  3. Students calculate the actual mechanical advantage for several simple machines. Get Free Access See Review. Lesson Planet. Work, Energy, Power, and Machines For Teachers 9th - 12th. High schoolers differentiate potential and kinetic energy. In this physics lesson, students investigate how work is done by simple machines. They calculate ideal.
  4. I'm looking to calculate the force exerted by H2 on the bottom cylinder, or rather the mechanical advantage throughout the range of motion. Homework Equations Torque T = F * L * sin(90-theta) Pythagoreum r^2 +H^2 = X^2 Crank position x = r.cos A + sqrt{H^2 - r^2\sin^2 A} Constant Angle A = θ + 45 degrees The Attempt at a Solutio

The actual mechanical advantage of a machine does what? Is less than the ideal mechanical advantage of the machine. If you have to apply 40 N of force on a crowbar to lift a rock that weights 400 N, what is the actual mechanical advantage of the crowbar? Nice work! You just studied 5 terms! Now up your study game with Learn mode Calculate the mechanical advantage from the following formula. IMA = d drive wheel / d drive axle. mechanical advantage: the mechanical advantage can be found by dividing the drive wheel diameter (d drive wheel) by the drive axle diameter (d drive axle). Testing the Results. Test the accuracy of your calculations The article discusses three popular systems of pulleys and discretely explains the involved operational mechanisms. The systems basically include different groups of pulley/string mechanisms, each involving a specific pattern of movement for lifting the attached weight in response to the applied effort. All the systems basically are designed with one common focus that is to make the involved. Think, if the measured value can be trusted within +AF Newton then within what accuracy your Mechanical Advantage calculated from your measured values be. Explain showing work as needed, of course. Numbers without explanation will get you fired. Conclusion: Compare the actual with the theoretical mechanical advantage. 1 Calculate the ideal effort force needed to overcome the known resistance force for each system. Formula Substitute/Solve Final Answer IMA = F R F E (ideal) F E (ideal) F R IMA = m R g IMA = (1.0 kg)(9.81 m s 2) 0.77 F E (ideal) = 12.74 N [m E = 1.3 kg] 62.Calculate the actual mechanical advantage of the lever

Summary. A machine is an object or mechanical device that receives an input amount of work and transfers the energy to an output amount of work. For an ideal machine, the input work and output work are always the same. The six common simple machines are the lever, wheel and axle, pulley, inclined plane, wedge, and screw Calculate the actual mechanical advantage of a pulley attached to a 435-N load, but requiring only 75 N to operate. 3. What is the actual mechanical advantage of a lever created form a plank of wood and a paint can if a 1540-N boulder is lifted with only 225 N of force? 4. Calculate the mechanical advantage of a ramp that is 4 m long and 1.5 m. 1. (1.00 pts) The actual mechanical advantage is always greater than the idea mechanical advantage 2. (1.00 pts) The image below shows a pulley system. If a mass M is attached to the bottom, the force required to balance the mass is: A) M/4 B) Mg/5 C) M/5 D) Mg/4 E) Mg/3 F) M/ Answer: 1 question What data are needed to calculate the actual mechanical advantage of a machine? efficiency and force of friction input distance and output distance work input and work output input force and output force - the answers to estudyassistant.co Simple machines, such as a lever, inclined plane, or wheel and axle, give you a mechanical advantage.You calculate the mechanical advantage of a simple machine by dividing the output force by the.

welcome back now let's do some more mechanical advantage problems and in this video we'll focus on pulleys which is another form of a simple machine and we've done some pulley problems in the past but now we'll actually understand what the mechanical advantage inherent in these machines are so let's say let's start let me start with a very simple pulley so this is a ceiling up here and I have. What is Mechanical Advantage (MA)? -Mechanical advantage describes how much work can be done based on the input. -If my system required me to apply 50 pounds of force into the system to lift 100 pounds of weight, I have used MA

Mechanical Advantage & Effeciency Objectives Explain how a machine makes work easier Describe and give examples of the force-distance trade-off that occurs when a machine is used Describe & Calculate mechanical advantage Describe & Calculate effeciency Explain why machines are not 100% efficient What is a machine

AMA = Actual Mechanical Advantage D E = Effort Distance D R = Resistance Distance F E = Effort Force F R = Resistance Force Wedge L Pulley Systems = N IMA = Total number of strands of a single string supporting the resistance d d IMA = Wheel and Axle Effort at Axle Effort at Wheel Lever 1st Class 2nd Class 3rd Class TOTA A Quick Overview of the Mechanical Advantage of Gear Ratios: Using gears to create mechanical advantage is undisputedly a very important advancement that is utilized in many/all feilds of engineering. This instructable will give you a quick crash course on finding, analyzing, and utilizing gear ratios Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever. Machine components designed to manage forces and movement in this way are called mechanisms What is the actual mechanical advantage of the system? 3. Using static equilibrium calculations, calculate the length from the fulcrum to the resistance force. A wheel barrow is used to lift a 200 lb load. The length from the wheel axle to the center of the load is 2 ft. The length from the wheel and axle to the effort is 5 ft

Calculate the actual mechanical advantage of inclined planes and pulley systems. Compare actual and ideal mechanical advantage. 130 STC/MSTM ENERGY, MACHINES, AND MOTION . Getting Started Suppose someone asked you, Which is the best machine: an inclined plane, a pulley, or a lever? Answer the questio Finally, calculate the actual mechanical advantage. Using the formula we can find the actual mechanical advantage is 100 / 40 = 2.5. FAQ. What is AMA? AMA is an acronym in physics that stands for actual mechanical advantage. It's a measure of how much advantage is gained from a mechanical system with respect to an input and output forc Mechanical advantage of a machine is defined as the ratio of load lifted at output end to the effort applied at the input end of the machine. Therefore, M e c h a n i c a l A d v a n t a g e = ( O u t p u t f o r c e I n p u t f o r c e) \quad \text {Mechanical Advantage} = \left ( \frac {\text {Output force}} {\text {Input force}} \right.

PPT - Mechanical Advantage and Efficiency PowerPointWhat is the ideal mechanical advantage of the system

Mechanical Advantage of a Pulley Calculato

Mechanical Advantage in Machines. by Ron Kurtus (revised 28 June 2016) The purpose of a machine is to create a mechanical advantage that will facilitate your ability to increase the output for a given input. There are three types of mechanical advantage: force, distance and speed Mechanical Advantage and Efficiency of Machines Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website What is the actual mechanical advantage of the system? Final Answer Formula Substitute / Solve Using static equilibrium calculations, calculate how far from the fulcrum the theezers must be held to avoid damaging the sliven Final Answer Formula Substitute / Solve A medical technician uses a pair of four inch long theezers to remove a wood slive Calculator Menu | Beam Deflection Calculators. Mechanics and Machine Design, Equations and Calculators. This lever mechanical advantage equation and calculator Case #1 will determine the force required for equilibrium with the known forces and length

Actual Mechanical Advantage - YouTub

Physics Review - Google Docs. Mechanical Advantage of a lever MA = effort arm length EAL. load arm length MA LAL. Mechanical ADvantage of a Pulley MA = input distance ID. output distance MA OD. Mechanical Advantage of an Inclined Plane = Length of Slope SL. Height of Plane MA HP. Actual Mechanical Advantage: AMA = measured output force (N) MOF Mechanical Advantage Basics 1.) Mechanical advantage is how much the machine ___multiplies__ your force. 2.) What does it mean about a machine if it has a mechanical advantage of 1? The machines doesn't increased your effort/ input force. The force the machine applies to an object is the same as the force you put in

Simple Machines --What is Mechanical Advantag

Calculating Forces in the Pulley Mechanical Advantage Systems Used in Rescue Work. John Petter Øhman common examples of both simple and compound rope and pulley MA (mechanical advantage) systems, and explains how to calculate mechanical advantage ratios in those systems. the value of T becomes the amount of actual input force. Calculate the actual mechanical advantage of the inclined plane system. Formula Substitute / Solve Final Answer 5. Calculate the efficiency of the inclined plane system. Formula Substitute / Solve Final Answer 6 mechanical advantage of less than 1, the output force causes the bicycle to move faster than the rider could walk, so it is a very useful machine. Comparing Real Mechanical Advantage With Speed Ratio When people calculate mechanical advantage and speed ratio they may find that they are the same

Calculate the actual mechanical advantage (AMA) of a ramp

Using the fundamental definition of mechanical advantage: force applied divided by effort, we would get 2000g/3000g= 2/3 as the actual mechanical effort. Must be one heck of lot of friction in that system: although the theoretical mechanical advantage is 12/1.5= 8, the actual mechanical advantage is 2/3 Calculating mechanical advantage in practice. The efficiency (E) of a haul system indicates the force multiplier factor that you can exert on the rope.For example, if you are able to pull 20 kg maximum on a rope with your bare hands, a 3:1 haul system will enable you to raise a 60 kg mass.This reduction is obtained by increasing the amount of. Mechanical Advantage, Velocity Ratio and Efficiency Mechanical Advantage (MA) Mechanical advantage is defined as the ratio of resistance overcomes to the effort applied. The simple machine requires force to do work. The resistive force to be overcome is called load and the force applied to overcome the load is called effort. Velocity Rati Calculate the Actual Mechanical Advantage iii. Calculate the Theoretical Mechanical Advantage iv. Calculate the Efficiency of the system 4. Figure D: Assuming that the friction is negligible, and the pulleys are massless a. Calculate the force F required to lift the 50Kg weight b. Calculate the Actual Mechanical Advantage 5 3. Calculate the weight of the object using the following equation: Weight = Mass x 10, this would be the Output Force. Apply the following equation to find the Actual Mechanical Advantage. AM =Output Force / Input Force 4. Measure the length of the applied force from position to the fulcrum, this is the force arm length

Simple Machines - Science Olympiad Student Center WikiActivity 1PULLEY MECHANICAL ADVANTAGE OF 3 - Wroc?awski InformatorCompound Machine Project - ES

Gears are modified wheel and axle machines. Explain how to calculate the mechanical advantage of a pair of gears. Divide the radius of the effort gear by the radius of the resistance gear: Why is actual mechanical advantage less than the ideal mechanical advantage? Ideal MA doesn't take energy lost to friction into account: IMA= Le/Lr: MA= R/ Calculate the actual mechanical advantage of your wheel and axle system if the resistance force is applied to the wheel. Formula. Substitute / Solve. Final Answer. Calculate the efficiency of the wheel and axle system when the resistance force is applied to the wheel. Formula Mechanical advantage. In machines that transmit only mechanical energy, the ratio of the force exerted by the machine to the force applied to the machine is known as mechanical advantage. Under mechanical advantage the distance the load will be moved will be only be a fraction of the distance through which the effort is applied. While machines. So, lacking an exact comparison, I searched on how to calculate mechanical advantage and found references to the T method, a method counting the ropes, and a method of counting the pulleys. Anyways, the actual system is shown in the first diagram below. If it matters, the anchor point is on the ceiling, and the load is on the floor d) The actual mechanical advantage (AMA) does factor the friction through the rope, rope stretch, and rope rubbing on edges. In a 2:1 system, the AMA is approximately 1 7/8:1. e) The major difference between theoretical and actual mechanical advantage is friction. f) In any change of direction effort the pulley is stationary B. The ratio of mechanical advantage of a simple pulley is 1:1. 3. B. Calculate the PSI by taking the weight divided by the size of the object the weight is bearing on. 100/10 = 10 PSI. 4. A. The farther away from the fulcrum, the faster the object will move. 5