Simple Machines

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Across
  1. 3. one end of the rope is fixed and the wheel is free to move
  2. 6. two machines working together
  3. 7. 1st class lever
  4. 8. grove wheel with a rope running along grove
  5. 9. 2nd class lever
  6. 10. inclined plain with one or two sloping sides
Down
  1. 1. two or more simple machines that corporate together
  2. 2. inclined plain wrapped in a spiral around a cylindrical post
  3. 4. system of pulleys consisting of fixed and movable pulleys
  4. 5. 3rd class lever
  5. 9. attached to something that doesn't move