In this video, we uncover the fascinating world of mechanical advantage through three simple yet powerful machines , levers, pulleys, and gears. For centuries, humans have used these inventions to ...

Can you make an elevator out of a spool of thread, some string and a hanger? Your friends might think it is magic, but it’s science at work! Here’s an easy experiement that has its ups and ...

Explore the clever mechanics behind pulleys in Jiwi's Machines Episode 2. Discover how simple systems create powerful movements in this exciting Science Extra feature.

Atwood's machine is the name of a device that looks like this: Also known as "two masses on a pulley". Surprisingly, this simple device comes up a lot in intro physics texts.

For example, you can see how many pulleys you need to lift a spaceship or see how the direction of a machine changes depending on how much force is applied. Simple Machines is available for $2.99 ...

Background Pulleys are simple machines that can make the job of lifting objects easier. They are made from another type of simple machine—the wheel and axle. A simple pulley has one more part ...