Humans had to carry out all their machining processes by hand for centuries. Even precision tools had to be maneuvered very carefully, inch by inch, by people holding the devices personally. That all ...

A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called ...

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.