| A | B |
|---|
| Ergonomics | A systems approach for analyzing the physical interaction of the human worker with his/her work environment to maximize productivity, quality, usability, safety, health, and comfort. |
| Work | _____________is a measure of how much force you apply to move an object through a distance. |
| Effort Force | An external force applied to an object. |
| Resistance Force | The weight of the object you are trying to move (or the force that pushes back) is called the __________. |
| Simple Machine | A mechanism that changes the direction or magnitude of a force. |
| Compound Machine | A machine made up of two or more simple machines. |
| Mechanical Advantage | The ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine. |
| Seesaw | Which one is an example of a first class lever? |
| Wheelbarrow | Which one is an example of a second class lever? |
| Tweezers | Which one is an example of a third class lever? |
