Some good examples of simple machines
A machine is a contrivance designed for the purpose of taking in energy in some form, modifying it and delivering it in some other form more convenient for the purpose in view.
There are very many good examples of simple machines and rather than having the good sense to use one of them the workman, left, is just plain simple.
The force which applies energy at one point is called the effort and the force delivered at another point overcomes the load.
A machine can be as simple as a spade, a ramp or a see-saw. A screw, a lever or a block and tackle.