FIGURE 4-12 -A 60.0-kg person rides in an elevator while standing on a scale. The scale reads 400 N. What is the acceleration of the elevator? A)3.14 m/s² downward B)6.67 m/s² downward C)zero D)9.81 m/s² downward E)6.67 m/s² upward

Question

Quizplus · Accepted Answer

The scale reading is less than the person's weight, so the elevator must be accelerating downward. The acceleration is:a = (F - mg) / m = (400 N - 60.0 kg * 9.81 m/s^2) / 60.0 kg = 3.14 m/s^2 downward

FIGURE 4-12 -A 60.0-Kg Person Rides in an Elevator While Standing on While