In January 2018, the Anonymous Facebook page shared a video that seemingly showed a simple machine automatically sorting hundreds of small balls by color along with a request for someone to explain ...

Introduction Have you ever used a coin-sorting machine to separate pennies, nickels, dimes and quarters? When you need to separate things that are all mixed together, using a machine can be much ...

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.