HS Physical Ch. 7

2. The IMA of a ________ system depends on the number of rope segments or cables supporting the load
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
8. w=Fxd is the __________ for mechanical work
10. A wheel barrow an example of a ________-class lever
13. A ___________ is a wheel and axle that acts like a continuously rotating second-class lever
15. A __________ consists of a wheel with notches or teeth around its circumference
16. A ________ is an example of a screw

1. ____________ occurs when a force acts on an object to move it in a direction parallel to the force vector
3. A baseball bat is an example of a ______-class lever
4. A ________ is an example of a wedge
5. A lever is a rigid bar that rests on a pivot point called a ________
6. _________ is the rate of doing work
9. A ________ is an example of an inclined plane
11. A see-saw is an example of a ______-class lever
12. A ________ is a three-dimensional object that exerts a force to spread material apart as it is forced into the material
14. A drive wheel of a ______ is a wheel and axle that acts like a continuously rotating third-class lever