Simple Machines

2. ____is a comparison of a machine’s work output with the work input
3. ____is a device that helps make work easier
7. The unit for distance is ____
8. A grooved wheel that holds a rope or a cable.
9. ____ occurs when a force causes an object to move in the direction of the force
10. Two circular objects of different sizes.
14. The unit for work is ____
15. The unit for power is ____
16. An inclined plane wrapped in a spiral.

1. ____ is the number of times a machine multiplies the force applied
4. A straight, slanted surface.
5. The unit for time is ____
6. A double inclined plane that moves.
11. The unit for force is ____
12. A simple machine consisting of a bar that pivots at a fixed point called the fulcrum.
13. ____ is the rate at which work is done, or, how fast work is done