Puzzle 20: Simple Machines

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Across
  1. 3. – Rotating tool.
  2. 4. – Force applied by user.
  3. 7. – Device to make work easier.
  4. 8. – Change in position.
  5. 10. – Rotating handle.
  6. 12. – Gear with teeth along the edge.
  7. 16. – Component of a pulley.
  8. 18. – Rigid bar turning on a fulcrum.
  9. 21. – Wedge for cutting.
  10. 22. – Wedge for splitting.
  11. 23. – Slanted plane.
  12. 26. – Rate of doing work.
  13. 27. – Gear with teeth on the edge.
  14. 28. – Tapers to split objects.
Down
  1. 1. – Rotational force.
  2. 2. – Wheel with rope to lift a load.
  3. 5. – Pivot point of a lever.
  4. 6. – Two blades forming levers.
  5. 9. – Pulley system for lifting.
  6. 11. – Rod supporting a wheel.
  7. 13. – Flat surface.
  8. 14. – Toothed wheel transmitting motion.
  9. 15. – Circular motion.
  10. 17. – Push or pull applied.
  11. 18. – Object being moved.
  12. 19. – Sloped surface.
  13. 20. – Circular object for rotation.
  14. 24. – Work output compared to input.
  15. 25. – Inclined plane wrapped around a cylinder.
  16. 28. – Force multiplied by distance.