Sometimes a barge, between the barge and the tug, the cable hits the bottom and it'll grab your trawl and scoop up a bunch of traps."
VOA: standard.2010.07.20
You can see that if a was equal to g, your downward acceleration is that of gravity, namely the cable has snapped in the elevator, Then you don't feel any weight.
你会发现如果 a 等于 g,你下降的加速度就是重力加速度,也就是电梯的绳索断了,那时你会完全失重
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