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When you step into an elevator and close the door, you had passed through two doors and are now standing in a box (or the elevator car) inside a vertical passageway (called the lift shaft). One door is in the walls of the floor that you got off, and the other door is part of the car itself.
Inside the shaft are hoisting cables attached to the top of the car. The cables run over a sheave (pulley) connected to an electric motor at the top of the shaft. The other end of the cables is connected to a heavy steel weight called a counterweight. When the car goes up, the counterweight goes down; when the car goes down, the counterweight goes up.
How the counterweight reduces to a minimum the power needed to operate the elevator ...
Weight of counterweight = Weight of the car + (about) ½ of its maximum passenger load
So when the elevator operates, it needs power only to lift the weight of the extra passengers in the car; the rest of the weight is balanced by the counterweight.
What else can I help you with?
What is the difference between pneumatic elevator and hydraulic elevator?
Pneumatic elevators work on air pressure (similar to a bank's drive through suction tubes) and hydraulic elevators work on oil/water pressure.
How many elevators does the rockfeller center have?
Rockefeller Center has a total of 66 elevators serving its various buildings and facilities. These elevators are designed to efficiently transport visitors and tenants throughout the complex. The elevators include both standard passenger elevators and freight elevators, ensuring smooth access to the diverse attractions and offices within the center.
Why are elevators called elevators?
Becasue they ELEVATE you to different stories in a building! i hope that helps. :P
Did they have elevators in 1969?
Yes they did.
Why were elevators used in coal mine shafts in the 19th century?
from what I hear, they still use elevators. Know of a guy who repairs conveyor systems and has had to go down elevators (sometimes it takes an hour) to get underground! This is in 2009!
How do roped elevators work?
pulley system, much like the cabled elevators work.
Do sticky piston elevators work in minecraft?
of course
Have the workers at sony patched all the glitches on mw2 for the PS3?
no, wall breaches and elevators still work. elevators can't be patched
Where are the elevators on an airplane and how do they work?
Elevators are usually on the horizontal tail of the aircraft. They effectively change theangle of attack of the wings causing either climb or descent.
Do cell phones work in elevators if there's a camera inside?
Yes.
What is the difference between pneumatic elevator and hydraulic elevator?
Pneumatic elevators work on air pressure (similar to a bank's drive through suction tubes) and hydraulic elevators work on oil/water pressure.
How do you find elevator glitches MW2?
Elevators Do Not Work Anymore After The DashBoard Patch!!
How does elevators work?
Passenger elevators are big pulleys powered by a motor with 6-8 cables or more that pull the elevator cab or the counter weight letting the elevator go up or down.
How is elevators related to math?
elevators are related to math because elevators have numbers on them
Fox Elevators?
Elevators Company in Ahmedabad
How many elevators are in Chicago?
10000 elevators in Chicago
How many elevators does buckingham palace have?
they have 2 elevators
