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 ...

When you push or pull with a simple machine, you are applying a force and doing work. And, if you get more force out of a machine than you put into it, then that machine has a mechanical advantage.

The simple machines that changed the world throughout history. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Throughout history, humans have ...