You may have seen what a magnet will do to iron filings, arranging them into specific patterns like the one you see here. This a
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To solve this problem we will use Newton's second law in order to obtain the weight of a person. The second law tells us that
F = ma
Where,
m = mass
a = Acceleration
In this particular case, the acceleration is equal to that exerted by the earth through gravitational acceleration, so if the person's weight is 75Kg and the gravity is , the weight of the body will be,
When the elevator is at rest this reads 735.75N and 75Kg (The same mass of the person)