HS Physical Ch. 7

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Across
  1. 2. The IMA of a ________ system depends on the number of rope segments or cables supporting the load
  2. 7. An ____________ is a two-dimensional tilted surface that allows a resistance load to be moved from a lower position to one that is higher with less effort than lifting it vertically
  3. 8. w=Fxd is the __________ for mechanical work
  4. 10. A wheel barrow an example of a ________-class lever
  5. 13. A ___________ is a wheel and axle that acts like a continuously rotating second-class lever
  6. 15. A __________ consists of a wheel with notches or teeth around its circumference
  7. 16. A ________ is an example of a screw
Down
  1. 1. ____________ occurs when a force acts on an object to move it in a direction parallel to the force vector
  2. 3. A baseball bat is an example of a ______-class lever
  3. 4. A ________ is an example of a wedge
  4. 5. A lever is a rigid bar that rests on a pivot point called a ________
  5. 6. _________ is the rate of doing work
  6. 9. A ________ is an example of an inclined plane
  7. 11. A see-saw is an example of a ______-class lever
  8. 12. A ________ is a three-dimensional object that exerts a force to spread material apart as it is forced into the material
  9. 14. A drive wheel of a ______ is a wheel and axle that acts like a continuously rotating third-class lever