Chapter 14

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