machine

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Across
  1. 2. an inclined plane with 2 sloping sides instead of one
  2. 3. a rope wrapped around a wheel
  3. 4. a slanted surface or ramp
  4. 6. a machine that combines two or more simple machines
  5. 8. the transfer of energy through motion
  6. 9. a bar that is free to turn on a fixed point called a fulcrum
  7. 11. how much of the work put into a machine is changed to useful work put out by the machine
Down
  1. 1. a machine consisting of two wheels of different sizes that rotate together
  2. 5. fe x de = fr x dr
  3. 7. the unit work is measured in
  4. 10. an inclined plane that turns around a center point
  5. 12. the fixed point that a lever supported