Newton's Third Law Pair in Elevator · PhysicsBowl 2014 #14
Physics · mechanics
Problem
A box rests on the floor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton's Third Law pair force to the gravitational force acting on the box by the Earth?
(A) There is no Newton's Third Law pair force in this scenario.
(B) The entire normal force of contact from the floor on the box.
(C) Only a portion of the normal force of contact from the floor on the box.
(D) The force of the cables pulling upward on the elevator.
(E) The gravitational force acting on the Earth by the box.