A person stands at rest on a bathroom scale that is placed on the floor of an…
PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
A person stands at rest on a bathroom scale that is placed on the floor of an upward-accelerating elevator. The system is defined as “the person only.” Which set includes all external forces acting on the person?
(a) the gravitational force exerted by Earth on the person and the tension in the elevator cable
(b) the gravitational force exerted by Earth on the person and the normal force exerted by the scale on the person
(c) the gravitational force exerted by Earth on the person and the normal force exerted by the person on the scale
(d) the gravitational force exerted by Earth on the person and an upward force due to the elevator’s acceleration