Pulley Systems

3. A pulley is a simple machine that is sometimes also called a “________ and tackle”.
5. _________ pulley as one pulley wheel which is attached to a fixed support.
6. A simple pulley does not give us any __________ advantage.
10. A pulley allows you to change the _________ of the pulling force.
11. _________ are an example of a pulley. You can open and close them.
12. In a compound system, as you add pulleys, the effort needed to lift the load __________.
14. The distance you need to pull the rope ___________.
15. A mechanism designed to make lifting and lowering heavy loads easier
17. A compound pulley allows us to move a ___________ load with less effort.

1. This means you need to apply the same amount of _______ as the load’s weight.
2. ____________ Pulley is another type of Pulley System being covered in this lesson.
4. ___________ pulley consists of two or more pulleys.
6. One pulley is usually fixed and the other is _________________ (which means that it moves as the load moves.
7. The _______ attached to one end of the rope, lifts up as the force is applied downwards as the rope is pulled down through the pulley wheel.
8. If you want to lift a load 5m off the ground using a compound pulley, you have to pull 10m of rope through the pulley. So, you have to pull it _______ as far.
9. Example of a pulley mentioned in this lesson.
13. Fits into the groove and the pulley wheel moves as the rope moves.
16. By changing the direction of a force, it helps to make the work __________.