Across
- 4. A system of fixed and movable pulleys
- 6. An inclined plane with one of two sloping sides
- 7. A modified first-class lever
- 9. A pulley system in which the pulley moves
Down
- 1. A sloping surface such as a ramp that reduces the amount of force
- 2. An inclined plane wrapped in a spiral around a cylindrical post
- 3. A shaft attached to the center of a larger wheel
- 5. A bar that is free to turn around a fixed point
- 8. A grooved wheel with a rope running along the groove