Across
- 4. inclined plane with 1 or 2 sloping sides
- 5. the unit for work
- 7. grooved wheel with a rope, chain or cable running along the groove
- 9. never changes
- 10. a device that makes life easier
Down
- 1. inclined plane wrapped in a spiral
- 2. advantage the ratio of the output force to the input force
- 3. a bar that is free to pivot around a fixed point
- 6. fixed point that a bar pivots on freely
- 7. the rate at which work is done
- 8. machine 2 or more simple machines that operate together