This is the product of the force or effort needed to move a load multiplied by the distance it was moved.
This is a simple inclined plane type machine that consists of a spirally threaded cylindrical rod that engages with a similarly threaded hole.
This is a small wheel with a grooved rim through which a rope of chains run. It changes the direction of a pulling force and combinations of these simple machines increase the force applied for lifting an object.
This is a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion.
This is a class of rotating machines or devices in which effort applied to one part produces a useful movement at another part. They are used for moving of lifting loads.
This simple machine is a slope or ramp that is used to lift a load. It trades distance for force
This is a combination of two inclined planes that is if itself moved with force to cut apart or separate an object.