2007-02-09 02:47:35 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
the elevator, newer ones have sensors on them to determine weight. When the maximum is reached a buzzer will sound. If more people try to get on the elevator will not operate, the doors will not close and it won't move. All cables are supplied with a tremendous safety factor. As an example if the maximum capacity of the elevator is 1500 poinds, ten people the breaking strength of the cables is probably ten times that. You have to remember that the cables also hold the elevator itself, that may be as high as 6000 pounds (3Tons). The extra weight is more of a problem for the lifting mortors than it is for the cables. If somehow cables did break, I have never heard of one doing that, there are brakes that prevent the elevator from falling. Next time you hear the buzzer, just get off and wait for the next one.
2007-02-09 03:02:07 · answer #1 · answered by ttpawpaw 7 · 1⤊ 0⤋
The actual capacity (or Service Capacity) is never reached in an elevator.
In the case where it is reached, the emergency brakes lock the elevator in place.
The capacity listed in any elevator is the factored capacity: a capacity that the makers of the elevator feel is safe after including some factors of safety.
In your lifeltime, you will never see an elevator reach its Service Capacity.
If the factored capacity is reached, the elevator will remain stopped until some weight is removed.
2007-02-09 02:57:49 · answer #2 · answered by Michael Dino C 4 · 1⤊ 0⤋
Elevators have sensors to ensure that they do not operate if overloaded - most sound either a bell or have a verbal announcement if their rated load is exceeded.
Elevators cannot fail and fall down the shaft in any event. Their introduction to use only came with the invention of the safety elevator by Elisha Otis. This is a brake held in the "off" position by the tension in the cable. If the cable snaps, the brake is applied instantly and stops the elevator dead in its tracks.
2007-02-09 03:34:16 · answer #3 · answered by Anonymous · 1⤊ 0⤋
The tension is the cord(s) holding the elevator reach a maximum force and break. In most elevators, I do believe there are backup breaks which prevent the elevator from free falling.
2007-02-09 02:52:05 · answer #4 · answered by bradiieee 2 · 1⤊ 0⤋
this just happened to us, we went to a superbowl party and ALL of us got on the elevator. well, we weighed too much and it started dinging. the door did close, but would not move and then the door opened again and started dinging again, also i believe the lights flashed as a warning. very funny, the last guy was my brother in law, not really a big guy, about 220+ and he said, "and heres where we are over our limit" and as soon as he got on, that happened, then of course we laughed and grunted, "got off of me" refering to the elevator. so, thats what happens when too many people are in there. we had about 20 people in there.
2007-02-09 02:57:59 · answer #5 · answered by CATHRYN K 2 · 1⤊ 0⤋