| A | B |
|---|
| IMA | Ideal Mechanical Advantage |
| AMA | Actual Mechanical Advantage |
| Input Force | the amount of force applied to the machine |
| Input Distance | the distance the applied force moves |
| Output Force | the weight moved by the machine |
| Output Distance | the distance the machine moves the weight |
| Input Work | the product of input force and input distance |
| Output Work | the product of output force and output distance |
| Work | product of force and distance |
| Energy | the ability to do work |
| Torque | product of distance and force |
| Positive Torque Direction | counterclockwise |
| Negative Torque Direction | clockwise |
| Block and Tackle | a compound pulley machine |
| "block" | a component of a block and tackle containing more than one pulley |
| tackle | the line or rope in a block and tackle syste, |
| sprocket | a gear-like machine connected to others by roller chain |
| roller chain | a type of chain used to transfer torque from one sprocket to another |
| first class lever | lever in which the fulcrum is place between the input and output |
| second class lever | lever in which the output is between the fulcrum and the input |
| third class lever | lever in which the input is between the fulcrum and the output |
| human elbow | example of a third class lever |
| fulcrum | pivot point of a lever |
| Joule | unit of work and energy equal to a force of one Newton moving a distance of one meter |
| calorie | unit of heat energy equal to 4.2 Joules |
| watt | unit of power equal to one Joule per second |
| horsepower | unit of power equal to 746 watts |
