Across
- 4. A cylinder with grooves cut on the outside
- 5. Calculation of how well a machine uses energy
- 8. Simple machine made of a rigid plank that pivots
- 9. The force that resisting motion
- 12. Device that helps us do work.
Down
- 1. One basic machine
- 2. Unit of measure for force
- 3. Can be fixed or moveable
- 6. Used to evaluate machines or devices
- 7. Simple machine that is forced into an object
- 10. A machine with many parts
- 11. Is a plank like a ramp
- 13. Force applied to the machine