Machine Puzzle

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Across
  1. 3. is attached to the center of the wheel.
  2. 6. at a fixed point called a fulcrum.
  3. 9. plane a simple machine that is
  4. 11. the ratio of work output to work input in a
  5. 12. which a rope, chain, or wire passes.
  6. 14. advantage a number that tells how many times a machine multiplies
  7. 16. a simple machine that consists of a wheel
Down
  1. 1. a simple machine that consists of a bar that
  2. 2. A device that helps do work by changing the magnitude and/or direction of an applied force.
  3. 4. and axle a simple machine
  4. 5. of two circular objects of different sizes; the
  5. 7. loads; a ramp.
  6. 8. the point on which a lever pivots.
  7. 10. efficiency a quantity, usually expressed as a percentage, that
  8. 13. is the larger of the two circular objects, and the
  9. 15. force.