Across
- 3. a percentage used to indicate how much a machine actually helps accomplish work
- 4. the work done in a certain amount of time
- 7. the abbreviation for the reason we use a simple machine
- 11. the device used to lift loads over a longer distance
- 13. the distance from the resistance to the fulcrum in a lever
Down
- 1. a device with a rope or string
- 2. a device with circular parts
- 5. the distance from the fulcrum to the effort on a lever
- 6. a simple machine type that comes in three classes
- 8. a common piece of playground equipment
- 9. that entity obtained by the product of mass and acceleration
- 10. the unit used to measure power
- 12. the unit used to measure forces
- 14. a simple machine which could be seen as a ramp wrapped around a central core