| A | B |
| Mechanical Advantage | measure of force amplification (increase) |
| Mechanical Advantage lever formula | Mechanical Advantage distance formula |
| Mechanical Advantage formula definition | input distance divided by output distance |
| MA ratio greater than 1 | big output force, machine is useful |
| MA ration less than 1 | small output force, machine is not useful |
| input distance bigger than output distance | MA ratio bigger than 1 |
| input distance smaller than output distance | MA ration less than 1 |
| MA | Mechanical Advantage abbreviation |
| input distance | effort arm |
| output distance | load arm |