An object with a weight of 600 Newtons rests on the floor. What force is the floor exerting on the object?

Question

A. 0 newton

B. 300 newtons downward

C. 600 newtons down

D. 600 newtons upwards

Answer 1

We assume the floor is perfectly horizontal. Normal force always acts perpendicular to the surface that exerts it. In this case, the object's weight is 600 N and weight always acts straight down. So the normal force must balance that by exerting 600 N upwards - answer D