Question

PLEASE TELL ME WHETHER A OR B!! EXPLANATION ALSO PLEASE
If you get into an elevator on the thirty-third floor of a large building and the elevator begins to accelerate downward, will the normal force pushing up on your feet be greater than, equal to, or less than the force of gravity pulling downward on you?
Is it:
A) The normal force will be equal to your true weight because the normal force acts equal and opposite only to the force due to gravitation.
B) The normal force will be less than your true weight because the normal force will now equal your true weight plus the descending force.

Answer 1

Imagine standing on a bathroom scale in the elevator. When the elevator accelerates downward, will the scale read your true weight, less than your true weight, or more than your true weight? Do you temporarily feel that you are getting lighter or heavier? Well, the scale reads the normal force.