The force exerted by the floor of an elevator on the foot of a person standing there is more than the weight of the person if the elevator is

In general the normal reaction .


But when the elevator is going up, a pseudo force acts in the down direction, thus we get,


If the elevator is slowing down, , sign of a changes.


If the elevator is speeding up,


Thus, option B is correct.


But when the elevator is going down, a pseudo force acts in the up direction, thus we get,


If the elevator is slowing down, , sign of a changes.


If the elevator is speeding up,


Thus, option C is correct.


option B and C are correct.

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