Raising a Bag of Toys: Pulley vs. Inclined Plane
Raising a Bag of Toys: Pulley vs. Inclined Plane
From the Series First Step Nonfiction — Simple Machines to the Rescue
Is it easier to lift a bag full of toys with an inclined plane or a pulley? Readers will see how a group of kids compares two simple machines and decides which one does a better job at… Read More →