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An elevator is supported by a single cab...

An elevator is supported by a single cable.There is no counter weight.The.elevator receives passengers atthe ground floor and takes them to the top floor, where they disembark. New passengers enter and are taken down to the ground floor. During this round trip, when is the tension in the cable equal to the weight of the elevator plus passengers ? When greater ? When less ?

A

The net work done by the two forces is zero.

B

The magnitude of work done by the gravitational force is greater than that done by tension.

C

The magnitude of the work done by the tension is greater than that done by the gravitational force.

D

The net work done by the gravitational force is negative.

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The correct Answer is:
A
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