When a 45-kg person steps on a scale in an elevator, the scale reads a steady...
When a 45-kg person steps on a scale in an elevator, the scale reads a steady 480 N. Which of the following statements must be true? (There could be more than one correct choice.)
Check all that apply.
| The elevator is moving upward at a constant rate. |
| The elevator is accelerating upward at a constant rate. |
| The elevator is accelerating downward at a constant rate. |
| From the given information, we cannot tell if the elevator is moving up or down. |
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When a 45-kg person steps on a scale in an elevator, the scale
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3,4?
3. A 100-kg person stwnds on a scale fastened to the floor of an elevator. The scale reads in newtons. What does the scale read when (a) the elevator is moving with upward acceleration a (b) the elevator is moving with downward acceieration a' and (c) the elevator is moving upward at 20 m/s while its speed is decreasing at a rate of 8 m/s?? 4. A beer stein of mass 0.45 kg slides horizontally along the bar with...
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If a person steps on a scale in an elevator that is accelerating at a rate 1.300 m/s^2 (negative means downward while positive means upwards) and sees a scale reading of 660.400 Newtons what would the scale read if the elevator were not moving?
3,4?
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