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

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 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? <sub>f</sub> is the force of the floor on the person and <sub>g</sub> is the force of gravity on the person. A) B) C) D) E)

_g is the force of gravity on the person.

Quizplus · Accepted Answer

In the elevator, the person is not accelerating, so the net force acting on the person should be zero. The only two forces acting on the person are the force of gravity downwards and the normal force (reaction force) of the floor holding the person up. Since the person is not accelerating, these two forces should be equal in magnitude and opposite in direction. Only option B represents these two forces of equal magnitude and opposite direction.

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