Becasue they ELEVATE you to different stories in a building! i hope that helps. :P
elevators are machines installed in tall buildings ,to take people to upper floors in few seconds. Answer el·e·va·tor (ĕl'ə-vā'tər) n. A platform or an enclosure raised and lowered in a...
of airplanes, a movable control surface, usually near the tail, controls pitch
It depends on the area of the elevators
This statement makes no sense. This is not a question and can not be answered. Rewrite so the reader has some idea of what you want to know.