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 ...

Explains how simple machines, such as levers, pulleys, wheels and axles, and inclined planes, work together to make tasks easier by trading force for distance or vice versa. It illustrates the concept ...

A new children’s book, titled Simple Machines Made Simple, wants to demystify mechanical engineering for kids as young as a year old. It recently beat its Kickstarter goal by 700%—raising more than ...