PS: Unit 4 Chapter 3 Sections 1-4

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Across
  1. 2. the two types of pulleys are fixed and __________
  2. 6. the point at which a lever pivots
  3. 7. a wheel and axle transfer rotary motion to rotary or __________ motion
  4. 10. the class of lever where the resistance force lies between the fulcrum and effort force
  5. 11. a simple machine made of a rigid bar that pivots around a fixed point
  6. 12. use of machines is a trade-off between force and ___________________
  7. 14. a simple machine consisting of two back-to-back planes
  8. 16. a simple machine consisting of a rope or cable that turns around a wheel
  9. 18. the shaft to which a wheel is attached
  10. 19. a third class lever results in a gain in _________ and distance
Down
  1. 1. the direction that a wedge directs the input force
  2. 3. a hockey player swinging a stick is an example of a ______-class lever
  3. 4. an arrangement of pulleys designed to move heavy objects
  4. 5. mechanical advantage is a measure of how much an machine _______________ a force applied to it
  5. 8. a simple machine with slanted surface
  6. 9. a simple machine that consists of an inclined plane wrapped around a cylinder
  7. 13. a screw with smaller pitch has a ___________ mechanical advantage than one with a bigger pitch
  8. 15. an example of a first-class lever
  9. 17. the class of lever where the fulcrum is in the middle