De Medeiros, James, 1975-

Pulleys / James De Medeiros. - New York : AV2 by Weigl, 2013. - 24 p. : col. ill. ; 26 cm. - Simple machines . - Simple machines. .

Provides access to enhanced content that includes audio, video, web links, quizzes, activities, and a slide show. Includes index.

What is a pulley? -- Understanding force -- Force over distance -- How pulleys work -- Overcoming friction -- Three classes of pulleys -- Pulleys timeline -- What is a mechanical engineer? -- The two basic machines -- Seven facts about pulleys -- Pulleys brain teasers -- Science in action.

"Explains what a pulley is, how pulleys work, and includes examples of past and present uses."--Provided by publisher.

ISBN: 9781621274261 (lib. bdg.) 20.39

Source: Knowbuddy Resources

LCCN: 2012041022

Subjects--Topical Terms:
Pulleys--Juvenile literature.
Pulleys

Dewey Class. No.: 621.8/11