Chapter 14 Vocabulary

2. An inclined plane wrapped around a cylinder.
3. A V-shaped object whose sides are two inclined planes sloped toward each other.
5. A simple machine that consists of a rope that fits into a groove in a wheel.
6. The distance between the fulcrum in a lever and the output force.
7. The distance an output force acts through in a machine.
10. The number of times that a machine increases an input force.
12. A combination of two or more simple machines that operate together.
13. A common unit of power,equal to about 746 watts.
16. The ratio of the output force to the input force in a machine.
18. The distance through which the input force acts in a machine.
22. The fixed point a lever rotates around.
24. A simple machine that consists of two rigidly attached disks or cylinders, each one with a different radius.
25. A rigid bar that is free to move around a fixed point.

1. The mechanical 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 force exerted by a machine.
8. The work done on a machine as the input force acts through the input distance.
9. A slanted surface along which a force moves an object to a different elevation.
11. The work done by a machine as the output force acts through the output distance.
14. Is the product of force and distance.
15. The force exerted on a machine.
17. A device that changes a force.
19. The distance between the fulcrum in a lever and the input force.
20. The SI unit of work,equal to 1 newton-meter.
21. The rate of doing work.
23. The SI unit of power, equal to one joule per second.