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SAT® Subject Test in Physics

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Moderate

Woman in Elevator

SATPHY-XHL4YX

A woman stands in an elevator. We do not know anything about the motion of the elevator.

Which of the following pairs of vertical forces MUST be equal in magnitude to each other?

A

The force the elevator floor exerts on the woman and the force the earth exerts on the woman.

B

The force the elevator cable exerts on the elevator and the force the earth exerts on the elevator.

C

The force the woman exerts on the elevator floor and the force the earth exerts on the woman.

D

The force the elevator exerts on the elevator cable and the force the elevator exerts on the earth.

E

The force the woman exerts on the elevator floor and the force the elevator floor exerts on the woman.