8 out of 10 attempts Starting with the left-most column, populate the boxes from

Question

8 out of 10 attempts Starting with the left-most column, populate the boxes from left to right without skipping empty boxes. Ties should be grouped in the same box. - Assistance You are standing in an elevator. Given the following scenarios, rank the normal force exerted on you by the elevator floor, from smallest to largest. A) The elevator is stopped at a floor B) The elevator is accelerating upward. C) The elevator is accelerating downward. D) The elevator is traveling upward at a constant speed E) The elevator is traveling downward at a constant speed. Check My Work View Hint View Question Show Me Guided Solution Practice This Questic Print Question Help Report a Problem Largest

Explanation / Answer

The order would be as follows: (C) < (A,D,E) < (B)

Reasoning:

The normal force is the perpendicular force that acts on the observer by the elevator floor. Now, if the coordinates are allowed a (constant) velocity transformation in the direction of motion of the elevator, the force remains unchanged since the force involves derivative of the velocity. So when the elevator moves with constant speed, there is no effect on the normal force which remains same as when the elevator is at rest.

When the elevator is accelerating upwards (or downwards), the normal force increases (or decreases) since the effective acceleration due to gravity increases (or decreases) by an amount equal to the acceleration of the elevator.

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