Simple Machines

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Across
  1. 2. a pole that rests on a fulcrum
  2. 6. a surface that goes from a high place to a low place
  3. 7. a cylinder wrapped with an inclined plane
Down
  1. 1. wheels attached to a bar
  2. 3. a wheel with a rope around it
  3. 4. the point that rests on a lever
  4. 5. two inclined planes together