pulleys

An exploration of pulleys, covering how they are used, their design, how they work, and more. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

Text and pictures introduce the pulley, a simple machine used primarily to lift heavy objects.

Describes pulleys, including the history, function, and everyday uses.

Introduces the science of how pulleys work and describes different kinds of pulleys and the jobs they do.

A look at simple machines in the sports world.

An exploration of pulleys that defines what they are; discusses their parts, how they work, their history, and how they are used; and includes a related experiment.

Readers will learn all about this important, simple machine through detailed pictures with thorough annotations.

Introduces the science of how pulleys work and describes different kinds of pulleys and the jobs they do.

Explores how mobile cranes are used on construction sites.

Learn about the basics of pulleys.