Which one of the following free-body diagrams best represents the free-body diagram,with correct relative force magnitudes,of a person in an elevator that is traveling upward with an unchanging velocity? _f is the force of the floor on the person and _g is the force of gravity on the person.

Question

Quizplus · Accepted Answer

When the elevator is traveling upward at a constant velocity, the person inside it experiences two forces: their weight (gravity) and the normal force from the elevator floor. Since the velocity is constant, these forces must be balanced, meaning that the upward normal force is equal in magnitude to the downward force of gravity. The free-body diagram in choice B correctly shows this balance of forces with the vectors of equal magnitude pointing in opposite directions. Choices A, C, D, and E are incorrect because they either incorrectly show an unbalanced set of forces or they show forces that are not relevant to the situation.

Which One of the Following Free-Body Diagrams Best Represents the Free-Body