Notes
Introduces the younger reader to the science behind machines that carry, pull and lift. Chapters look at how screws, levers, pulleys and ramps work in real machines. Basic principles such as the science of levers are explained simply and clearly. Readers can test the science in projects that combine to make a model crane.Contents
Contents : introduction; the science of machines; tracks and stability; levers and pulleys; power; controls; science principles; index and answers;Additional Info
Learn the science, then make the model. Plans and templates on end papers.
