Across
- 1. a nail shape cylinder to hold two objects together
- 5. a lifting machine when a ripe unwinds from the wheel
- 6. something to help move a heavy object
- 7. a wheel with a grooved rim around when a cord passes
- 8. a machine with two or more simple machines working together
Down
- 2. a force into a narrow space
- 3. a pivot point when a lever turns
- 4. a surface tilted at a angle with one end higher than the other