Chapter 14 Vocab

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Across
  1. 3. device that changes force
  2. 5. number of times that a machine increases input force
  3. 6. machine that has two rigidly attached disks/cylinders, each with a different radius
  4. 8. the SI unit of work, equal to 1 newton-meter
  5. 10. force exerted by a machine
  6. 12. an inclined plane wrapped around a cylinder
  7. 13. distance through which the input force acts in a machine
  8. 15. simple machine that consists of rope that fits into a groove in a wheel
  9. 16. distance between a fulcrum in a lever and the input force
  10. 19. the SI unit of power, equal to one joule per second
  11. 20. ratio of the output force to input force in a machine
  12. 21. force exerted on a machine
  13. 22. the product of distance & the force in the direction an object moves
  14. 23. common unit of power, equal to about 746 watts
  15. 24. work done on a machine as input force acts through input distance
  16. 25. V shaped object whose sides are two inclined planes sloped towards each other
Down
  1. 1. combination of two or more simple machines that operate together
  2. 2. mechanical advantage of a machine in the absence of friction
  3. 4. percentage of work input that becomes work output in a machine
  4. 7. rigid bar that’s free to move around a fixed point
  5. 9. distance between a fulcrum in a lever and the output force
  6. 11. distance an output force acts through a machine
  7. 14. fixed point a lever rotates around
  8. 17. slanted surface which a force moves an object to a different elevation
  9. 18. the rate of doing work
  10. 22. work done by a machine as output force acts through output distance