Answer:
Thus defined, such simple devices as the lever, the pulley, the inclined plane, the screw, and the wheel and axle are machines
There are basically six types of machine:
The inclined plane. - used for raising a load by means of a smaller applied force. ...
The lever. - involves a load, a fulcrum and an applied force. ...
The pulley. - In simplest form it changes the direction of a force acting along a cord or rope.
The screw. ...
The wedge. ...
The wheel and axle
