Simple Machines Crossword Puzzle

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Across
  1. 3. input force is between the fulcrum and output force
  2. 5. inclined plane wrapped in a spiral around a cylindrical post
  3. 7. fixed and moveable pulleys
  4. 9. grooved wheel with a rope chain or cable running along the groove
  5. 11. one end of the rope is fixed and the other is forced to move
  6. 12. Bar that is fee to pivot around a fixed point
Down
  1. 1. Output force is between fulcrum and input force
  2. 2. attached to something that doesn't move
  3. 4. fulcrum is between the input and output force
  4. 6. an inclined plane with one or 2 sloping sides
  5. 8. consists of an axle attached to center of a larger wheel so that the wheel and axle rotate together
  6. 10. sloping surface such as a ramp that reduces the amount of work required to do work