all of which follow the law of the lever. Class 1 is perhaps the most familiar. Examples of that are a seesaw, a crowbar as well as any time you’ve picked up a stick and placed it on a handy ...

I do indeed. OK, awesome!Show me the science!Right, I've set up a very simple machine for us.Yeah, it looks simple. This is a super-powerful lever, I think you'll find!So, the lever is this ruler ...