Chapter 13 Crossword

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Across
  1. 1. the point about which a lever pivots or rotates
  2. 4. A pair of tweezers is a ___ class lever
  3. 5. the amount of energy consumed or produced by a force acting on an object for a certain distance is called:
  4. 7. A knife has a ___ mechanical advantage than an ax
  5. 8. a device formed from two inclined planes placed back to back is called a:
  6. 10. A pair of pliers is a ___ class lever
  7. 11. ____ MA is the mechanical advantage for an ideal machine with no friction
  8. 13. simple machines cannot output as much useful energy as they receive because of the presence of ___
  9. 16. inclined planes increase the ___ to raise a load
  10. 18. kg • m2/s2
  11. 19. Unit for Power
Down
  1. 2. a ___ machine combines two or more simple machines
  2. 3. a force that tends to cause a rotation about a pivot point
  3. 6. Unit for Force
  4. 7. inclined plane: a simple machine that consists of a plane whose opposite ends are at different ___
  5. 9. A machine with a mechanical advantage of greater than 1 will multiply __
  6. 12. The mechanical advantage of an inclined plane depends on how ___________ the plane is.
  7. 14. Our classroom door is a ___ class lever
  8. 15. a simple machine that consists of an inclined plane wrapped around a cone or cylinder in a spiral pattern
  9. 17. a single movable pulley has an IMA of ____