Simple Machine Webquest

Pulley Note-Skeleton

Part A: Go to the following page. Read and complete the statements below the link.

http://library.thinkquest.org/J002079F/pulley.htm

A pulley is made from a _________________ and a __________________.

It is used to make ________________ easier.

A single pulley changes the _________________ of the lifting force.

If you add a second pulley, the amount of effort needed to lift a heavy object is_________________.

If you add a second pulley, you will have to pull the rope _____________.

Part B: Go to the following page and reading the directions. Then complete the questions below.

http://home.a-city.de/walter.fendt/physengl/pulleysystem.htm

Using the simulation, compare the spring tension using 2, 4, and 6 pulleys. How did adding pulleys change the spring tension? ____________________________________________________________________________________________________________

Now increase the weight and compare the spring tension using 2, 4, and 6 pulleys. How did adding weight change the spring tension? ____________________________________________________________________________________________________________

Part C: Look around your home for an example of a pulley. Using the back of this page, draw and label the pulley you find.

Now click here to return to the Pulley page.

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