A 71-kg man stands on a bathroom scale in an elevator. What does the scale read if the elevator is ascending with an acceleration of 3.0 m/s²? A)140 N B)480 N C)690 N D)830 N E)910 N

Question

Quizplus · Accepted Answer

The apparent weight is the normal force, which is the sum of gravitational force and the force due to acceleration. The gravitational force is 71 kg * 9.8 m/s² = 695.8 N. The additional force due to acceleration is 71 kg * 3.0 m/s² = 213 N. The total force is 695.8 N + 213 N = 908.8 N, which rounds to 910 N.

A 71-Kg Man Stands on a Bathroom Scale in an Elevator