Lock the wheels when weighing a patient on a wheelchair scale. Scale reading equals the person's weight with constant velocity. Scale reading initially less than weight in downward accelerating elevator.
When weighing a patient on a wheelchair scale, one should lock the wheels when the patient is on the scale to ensure stability and accuracy.
The scale reading will be equal to the person's weight when the elevator has a constant velocity, regardless of the elevator's direction.
In an elevator accelerating downward until a constant velocity is reached, the scale reading will initially be less than the person's weight before eventually matching it.
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