Get to know wheels and axles
By: Paul Challen.
Series: Get to know simple machines
Publisher: Crabtree Pub. Company
Published: 2009
Place of publication: New York, NY
Language: eng
ISBN-13: 9780778744887; 9780778744719
Subjects: Wheels -- Juvenile literature; Axles -- Juvenile literature
Genres: Juvenile literature.
Notes: Includes index.
Table of contents: title: Wheels and axles; title: The basic design; title: How it works; title: Wheel and axle in action; title: Moving loads; title: A multi-axle model; title: A lifting machine; title: Build a lifting machine; title: Wheels and axles in action; title: The fan in action; title: Fighting friction; title: How friction happens; title: The wheel and axle as part of a complex machine; title: Glossary.