MACHINE TRANSLATION (not authorised yet)
There are 6 simple machines, of which all other machines are composed. These are: blocks, levers, wedges, equally sloping, screws and reels. Complex machines consist of two or more straight machines that, when used together, make work easier. Even very complex machines, such as a car, are made up of straight machines that convert energy to do the job. Work is defined as the force used to travel a given road. A force and a path have the same direction.