IAS General Studies Prelims Question No. 87
A person weighing 80 Kg. is standing on an accurate scale in an elevator. The elevator is slowing down while moving downwards. In this case the scale will read__?
[A] 80 Kg.
[B] Less than 80 Kg
[C] More than 80 Kg
[D] Either less or more than 80 Kg
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[C] More than 80 Kg
In this case, the person is accelerating upwards (because it is slowing down while moving downwards). Due to this, the upward scale force must be larger than the downward gravitational force. Thus the scale force is larger than the weight of the person.
[/toggle][/toggles]In this case, the person is accelerating upwards (because it is slowing down while moving downwards). Due to this, the upward scale force must be larger than the downward gravitational force. Thus the scale force is larger than the weight of the person.