Download or read book Put Pulleys to the Test written by Roseann Feldmann and published by Lerner Publications ™. This book was released on 2017-08-01 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: What do flagpoles and some window blinds have in common? They use pulleys to perform work! Pulleys are simple machines. They help us to do jobs more easily. But don't take our word for it. Put pulleys to the test with the fun experiments you'll find in this book. As part of the Searchlight BooksTM collection, this series sheds light on a key science question―How Do Simple Machines Work? Hands-on experiments, interesting photos, and useful diagrams will help you find the answer!