SIMPLE MACHINE

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Across
  1. 3. The resistance encountered when one surface rubs against another.
  2. 7. A cutting tool combining double levers and wedges.
  3. 9. A heavy iron lever used for prying things open.
  4. 11. A circular component that rotates on a central axle.
  5. 13. The final useful work or force delivered by a machine.
  6. 14. Any apparatus using mechanical power to make work easier.
  7. 16. A rigid bar that pivots on a fixed point.
  8. 18. A grooved wheel with a rope used to lift heavy loads.
  9. 19. A twisting force that tends to cause rotation.
  10. 21. A single part or element of a larger machine.
  11. 23. A hand tool acting as a wheel and axle to turn screws.
  12. 26. A small tool acting as a double-lever for plucking.
  13. 28. The overall rate at which work is being done.
  14. 29. Relating to physical forces, machinery, or tools.
  15. 32. A sloping surface joining two different levels.
  16. 33. A chopping tool that relies on a sharp wedge head.
  17. 36. The force applied to a machine to get it to do work.
  18. 38. An inclined plane wrapped around a central cylinder.
  19. 43. A flat supporting surface tilted at an angle.
  20. 47. The initial force or work put into a mechanical system.
  21. 48. The ratio of output force to input force in a machine.
  22. 49. Energy transferred when a force moves an object.
Down
  1. 1. The action or process of moving or changing position.
  2. 2. A hauling device consisting of a rope wound around a cylinder.
  3. 4. A vehicle utilizing wheels, axles, levers, and gears.
  4. 5. The natural force pulling objects down toward the earth.
  5. 6. A portable inclined plane used to split or secure objects.
  6. 8. A wheel-and-axle setup used to control vehicles.
  7. 10. An everyday device that uses wedges to bind edges together.
  8. 12. The weight or object being moved by a machine.
  9. 15. A central shaft on which a wheel or gear rotates.
  10. 17. The exact pivot point around which a lever turns.
  11. 20. The central point or pin on which a mechanism turns.
  12. 22. The ability to do work or cause physical change.
  13. 24. The speed of an object moving in a specific direction.
  14. 25. When opposing forces are equal, causing zero movement.
  15. 27. A basic mechanical device that changes the magnitude of a force.
  16. 28. Pincers with flat surfaces used for gripping and bending.
  17. 30. A lifting tool that functions as a classic lever.
  18. 31. Any push or pull exerted on an object.
  19. 34. The tendency of an object to resist a change in motion.
  20. 35. The percentage of input work that becomes useful output work.
  21. 37. A complex machine made of two or more simple machines.
  22. 39. A hauling tool using a lever combined with a wheel and axle.
  23. 40. A dual-lever tool designed to crack hard shells open.
  24. 41. Forces that cause a change in an object's motion.
  25. 42. A toothed wheel that engages with another to change speed.
  26. 44. A massive machine using pulleys to lift heavy objects.
  27. 45. The length of the path a force moves along.
  28. 46. A long plank balanced in the middle that acts as a lever.