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.

Machines are all around us, helping us do tasks and work all day, every day. The most basic ones are deemed “simple machines,” but these were, and still are, some of the most essential technological ...

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 ...