You are conducting an experiment inside an elevator that can move in a vertical shaft. A load is hung vertically from the ceiling on a string, and is stationary with respect to you. The tension in the string is measured to be 10% less than the weight of the load. No other forces are acting on the load. Which of the following statements about the elevator are correct?

Check all that apply.

• The elevator is an inertial frame of reference.
• The elevator is not an inertial frame of reference.
• The elevator may be at rest for the duration of the entire experiment.
• The elevator may be moving at a constant velocity upward.
• The elevator may be moving at a constant velocity downward.
• The elevator must be accelerating.