Carrying a body up stairs in a plummeting aircraft requires less effort compared to moving it at constant altitude or during ascent. The key factor is the acceleration experienced; in free fall, the body experiences a state similar to that in a zero-gravity environment, as described in the concept of reduced-gravity aircraft. This phenomenon occurs when the aircraft is in free fall, effectively negating the effects of gravity temporarily, making movement significantly easier.
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. . . . or descending at a constant rate. What counts here is the acceleration up/down which will add or subtract from the steady g. If the plane is in actual free fall then you'd be in the same situation as in a satellite or the vomit comet. A pilot can fly 'downhill' and produce zero g (but only for so long!!!)jcarle said:if the plane was flying at constant altitude or ascending.