work power and efficiency

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Across
  1. 2. a flat sloped surface
  2. 3. the force you must overcome when using a machine
  3. 5. an inclined plane wrapped around a cylinder
  4. 6. the force you exert when using a machine
  5. 9. the rate at which work is done
  6. 12. two circular objects of different sizes that are attached in such a way that they rotate together
  7. 13. a comparison of the input force applied to a machine to the output force it must overcome
  8. 14. any rigid rod or plank that pivots
Down
  1. 1. a machine with one movement
  2. 4. an inclined plane that moves
  3. 7. Machine made of two or more simple machines
  4. 8. when a force produces motion in the direction of the force
  5. 10. the ability of a machine to convert input work into output work
  6. 11. a grooved wheel with a rope and a chain wrapped around it