Explains how pulleys work to lift heavy weights more easily. A fixed pulley changes the direction of force, allowing for easier lifting, while a movable pulley reduces the amount of force needed to ...

Thing 1 and Thing 2 demonstrate some simple machines. The Cat takes us on a tour of Machine-a-ma-zoo, and demonstrates simple machines, with some help from Thing 1 and Thing 2. They take a look at ...

Simple machines make work easier to do. But how? Join Joan at the Discovery Center of Idaho as she tries various experiments with simple machines. Science Trek is available to stream on pbs.org and ...

Introduction: This lesson provides students with a review of simple machines and their tasks. It works best in combination with your lesson on simple machines, or as a review/additional activity.

One common misconception is that belts will slip more frequently on composite pulleys than on metal pulleys. Not so! The wedging action of V-belts is so efficient that slip should never be an issue; ...

CLAY COUNTY, Ind. (WTWO/WAWV) — Since January, fifth grade students in Clay County have been testing their engineering skills to build a functional Rube Goldberg Machine. On Friday, they finally put ...