A screw is a simple machine because it incorporates an inclined plane, which is one of the most basic machines used for centuries.
Screw can modify force and motion.
what is a screw considered as.the screw is considered a simple machine because it has an inclined plane that swirls up an around a nail..... duh
It's also an alcoholic drink, involving orange juice and something else I can't recall.
the purpose of having a simple machine is to make life easier