Pulley Vocabulary

7. a force that works against motion as surfaces rub together.
9. – the force that a simple machine applies to the load.
11. a pulley system used to lift a heavy load.
13. a group of two or more pulleys that work together to lift a load.
14. the weight that is moved, lifted, or supported by a simple machine.
15. a scientific law that states that the total energy in a closed system remains constant.

1. the factor by which a simple machine reduces the effort needed to lift or move an object.
2. anchored in place. It rotates but does not move up or down.
3. the force that is applied to a simple machine such as a pulley or lever.
4. iattached to the load and is free to move up and down.
5. the percentage of input work that is converted to output work.
6. the application of a force over a distance.
8. a simple machine consisting of a wheel with a groove for a rope or cable.
10. Formula To calculate work, multiply the force by the distance: W=
12. a device that requires a single input force to accomplish work.