Mechanical Advantage AND MECHANICAL EFFICIENCY What is Mechanical
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Mechanical Advantage AND MECHANICAL EFFICIENCY
What is Mechanical Advantage (MA)? It is a calculation of how much a machine multiplies your input. If you put in 10 N of force and the machine puts out 40 N of force, how much did the machine multiply the force? 4 times How is this calculated? MA (mechanical advantage) = output force/input force What does a mechanical advantage of 1 mean? There is only a change of direction. What does it mean if the MA is less than 1? The machine has multiplied distance.
What is Mechanical Advantage (MA)? It can also be calculated by distance (instead of force. ) If you put in 3 m of distance and the machine puts out 1 m of force, how much did the machine multiply the force? 3 times How is this calculated? MA (mechanical advantage) = input distance/output distance What does a mechanical advantage of 1 mean? There is only a change of direction. What does it mean if the MA is less than 1? The machine has multiplied distance.
What is Mechanical Efficiency (ME)? It is a calculation of how efficient a machine is. If you put in 10 J (joules) of work and the machine puts out 9 J of work, how efficient is the machine? 90% Where did the work go? To overcome friction. How is this calculated? ME (mechanical efficiency) = output WORK/input WORK x 100 What does mechanical efficiency mean? The higher the percentage, the more efficient the machine. What does it mean if the ME is 100%? The machine is impossible. A machine has to have friction.
