Simple Machine

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Across
  1. 3. Ratio of output work to input work
  2. 5. An inclined plane wrapped around a cylinder
  3. 9. A rod connected to a wheel that rotates with it
  4. 10. A rigid bar that pivots around a fixed point
  5. 11. The ability to do work
Down
  1. 1. A grooved wheel with a rope that changes the direction of a force
  2. 2. Two inclined planes placed back-to-back
  3. 4. A push or pull on an object
  4. 6. Round object that reduces friction when rolling
  5. 7. A device that makes work easier
  6. 8. Using force to move an object a distance
  7. 12. Another term for an inclined plane