Chapter 14 Vocab

5. The work done on a machine as the output force acts through the output distance.
8. A rigid bar that is free to move around a fixed point.
10. The ratio of the output force to the input force in a machine.
12. The fixed point a lever rotates around.
13. The product of distance and the force in the direction an object moves.
14. The distance through which the input force acts as a machine.
16. The SI unit of power, equal to one joule per second.
17. A V-shaped object who’s sides are two inclined planes sloped toward each other.
18. The SI unit of work, equal to 1 newton-meter
19. A common unit of power, equal to about 746 watts.
21. A combination of two or more simple machines that operate together
23. A device that changes a force.
24. The force exerted by a machine.

1. An inclined plane wrapped around a cylinder.
2. The rate of doing work.
3. The mecahanical advantage of a machine in the absence of friction.
4. The percentage of the work input that becomes work output in a machine.
6. The distance between the fulcrum in a lever and the output force.
7. The number of times that a machine increases an input force.
9. A slanted surface along which a force moves an object to a different elevation.
11. The work done on a machine as the input force acts through the input distance.
15. The distance between the fulcrum in a lever and the input force.
16. A simple machine that consists of two rigidly attached disks or cylinders, each one with a different radius.
20. A simple machine that consists of a rope that fits into a groove in a wheel.
22. The force exerted on a machine.