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 ...

A $12 million crane capable of lifting 78 tons is the machine we utilize in this engineering Teachable Moment, using pulleys and levers to explain Mechanical Advantage. A $12 million crane capable of ...

Mouse trap cars are a common high school science experiment: power a mechanical car made of wood with a single mouse trap. In this video from Mark Rober, we get deep into the mechanics of what makes ...