Pulleys and Gears

by

Pulleys and Gears - Glover, David

How can pulling down make something go up? How do carnival rides work? What makes the hands on a watch go around? How does pedaling a bicycle make it move? This title shows you how different kinds of these two simple machines are all around you to make your work and play easier.

Currently there are no copies available. However, our inventory changes frequently. Please check back soon or try Book Fetch.