how was the elevator created?
474836
Heres a great page on the history and creation of the elevator:\n\nhttp://inventors.about.com/library/inventors/blelevator.htm
1007848
Now Elevator & Lift are used for the same mechanism that is used to transport people and/or objects up and/or down between floors or levels of buildings and structures.  Here in the US, we use the word elevator and over in the UK, they use the word Lift.  The word elevator also means the airfoil on the tailplane of an aircraft that makes it ascend or descend.  Moreover the word elevator is more correct, because it refers to going up and down and lift refers to going up. However the words elevate and lift are Synonyms of each other (they share the same meaning).
683520
It is the machine design. A vacuum is used to form the can that initially forms the bottom and sides. When the top is added it crimps the top by a tool that rolls the metal.
285890
on an elevator at my fiances work... the best part? THERE WAS ONLY 2 FLOORS. HAHA... WHEN THE DOOR WAS ABOUT TO OPEN HE KEPT PRESSING FLOOR #1 THEN FLOOR #2, IT WAS KINDA SCARING BUT SO INTENSE
670144
Usually magnets or wedges that are pressed down inbetween two metal rails:\n\n&#92;/\n||\n\nSorry that i couldn't draw well via the keyboard, but imagine the above as a cross section of the wedge, and the lower vertical lines as a cross section of the metal or semi-metal rails...the rails can taper outward a little to create more surface-to-surface contact.  you can imagine the normal force exerted onto one another between the wedge and the rails as the wedge is pushed into the rails, this normal force grows fast quickly as more force is exerted onto the wedge.  and i'm assuming that you're taking or have taken physics courses, so you should know that let's say a box sliding on the floor, has a frictional force of kw, where k is the kinetic friction constant, and w is the weight of the box, for the wedge/rail setup, we would replace w with the normal force, and the equation wouldn't be that simple, in fact, the force would grow almost exponentially as more force is exerted downward on the wedge since the wedge gets wider and wider.  think of it as a brake/rotor setup on a car, but instead of circular, it's linear, and instead of the brake pads squeezing on the rotor, it's the rotor being pushed into the pads.  this similar setup is used on trolley cars, which is why on some trolley trails, you see another pair of rails, situated close together, inbetween the two main rails for the wheels.\n\nnow in an emergency, there is no stopping anywhere else on the roller coaster track except on the boarding/exiting platform.  the engineers made it so that the momentum of the cars will take them through the entire track system no matter what the (realistic) load distribution is.  can you imagine trying to stop an extremely fast set of attached cars on a track with twists, turns, and loops?  and on top of that, the decision when and where to stop the cars is left to some teenage kid in the booth?  very unsafe and unreliable.
596883
Lift of WHAT?   Crane, Ballon, Brassier, Airplane wing....???\nGive us a CLUE
464518
There has been quite a bit of talk lately about building a space elevator, which works the opposite way; hang a cable from a satellite in geo orbit down to earth, then have an elevator climb up it (see wikipedia: space elevator)\n   In that case, the tensile strength of new nanotube materials is just high enough to make it possible (steel's strength-to-weight is far too low).  Since most materials are much stronger and more stable in tensile strength than in compression, building a tall building to geosynchronous orbit is probably impossible from a materials point of view.  On the other hand, you could build a building lower than geo orbit, but anything released from the top would fall to earth.  You'd have to launch rockets or use a cannon or railgun or something from the top to accelerate them to orbit.
269618
It depends on the acceleration of the elevator.\n\nIf the elevator acceletation is same as the earths gravity then weight will be zero.
97697
i dont think anyone actually invented it, i think it's something that just happened. here's more info
299116
The water powered elevator. Problem is......You need a water wheel. Well....if you have a water wheel well you are probably not in a place that needs an elevator. I really need to seriously rethink this.
245673
It was designed by chief architect Bruce Graham and structural Engineer Fazlur Khan of Skidmore, Owings, & Merrill.\n\nWas built by I guess Sears and the city of Chicago.
654062
kinetic energy is related to her actual velocity, this stays the same according to the problem. \n\nGravitational potential energy increases the farther you get away from the earth. This is going up as the elevator rises.\n\nSo, 4 is correct.
217657
The compound machine was realized with ship building. \nA hoist was needed to lift cargo and the sails. The pulleys provided the means in the short space allowed.
441981
In one of my psychology classes we had a girl ride in an elevator facing the back wall instead of the doors.  people get all weird, and end up facing the back wall too.  Think Bandura, Social learning theory/modeling.
287588
The Food Pyramid ..... that's why it was created.
792099
And the acceleration of the elevator is e.\n\nm*g = 477.1 N\nm*(g+e) = m*g + m*e = 652.4 N\n\nSolve for e.
40356
A model elevator.\n\nNo one really knows how they work and they always take it for granted.\n\nHe can use a cardboard box or half gallon milk carton, pencil, scissors, tape,  plastic straws, string and play-doh. Look up elevator in the World Book encyclopedia and build two models.\n\nOne should have the elevator (a small tic tac box) balanced by string over a straw with a play-doh weight.\n\nThe other can be a hydraulic elevator. Use play doh to attach the tic tac box (with a toy person inside) to a straw. punch a hole in the bottomn of thge milk carton (front and back cut out) now push the straw up and down to make the elevator rise and fall.