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Across
  1. 2. support around which a lever can move
  2. 5. used to calculate the mechanical advantage by using the effort arm and the load arm
  3. 6. moving parts in a machine that works together
  4. 8. the desired output of a lever or linkage that is moved
  5. 11. a mechanism made by connecting many levers together
  6. 13. a fixed or movable connection in a lever or linkage that allows force or motion to be directed where it is needed
  7. 14. the distance between the fulcrum and the point where the input effort is being applied
  8. 16. energy or movement that is a result of a machine doing work
  9. 18. a gear used to change rotational movement through 90degrees
  10. 19. part of a shaft that has one continuous groove in the form of a screw thread
  11. 20. a set of gear wheels found either at the bicycle's pedal or at the axle of the back wheel
Down
  1. 1. a gear with teeth like spurs on its edge
  2. 3. the distance between the fulcrum and the point where the output effort is being applied
  3. 4. when a gear wheel rotates one full turn around its own axle
  4. 7. energy or movement that is put into a machine
  5. 9. a straight measurement of a circle from one edge to the other edge through its centre
  6. 10. a bar that pivots around a fixed point
  7. 12. the desired input that starts or moves a lever or linkage
  8. 15. a straight measurement of a circle from its centre to its edge
  9. 17. gears and gearwheels used to change the speed of a turning or rotational, movement