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Question
Why is electrical power required at all when the elevator is descending? Why should there be a limit on the number of passengers in this case?
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Solution
When the elevator is descending, then electric power is required to prevent it from falling freely under gravity.
Also, as the weight inside the elevator increases. its speed of descending increases. therefore, there should be a limit on the number of passengers in the elevator to prevent the elevator from descending with large velocity.
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