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The question should read: Which weighs more, a pound of feathers or a pound of lead?
That way you can argue that lead should be measured using troy pounds, while feathers would be measured using avoirdupois pounds.
"In physical science, mass refers to the degree of acceleration a body acquires when subject to a force: bodies with greater mass are accelerated less by the same force."
"In everyday usage, mass is commonly confused with weight. But, in physics and engineering, weight means the strength of the gravitational pull on the object; that is, how heavy it is, measured in units of newtons. In everyday situations, the weight of an object is proportional to its mass, which usually makes it unproblematic to use the same word for both concepts."
And i think this is not an everyday situation...;)
Have you ever dropped a 1kg of lead on your foot? I'm telling you: It is heavier than the feather ;-)
I'd say it's just a "stupid" question, and neither answer is correct, and had the correct answer been available, it would've been too obvious!
Edit: Then again, it's sort of obvious anyway, I suppose.
Mass is a measure of how much matter an object has. Weight is a measure of how strongly gravity pulls on that matter. Thus if you were to travel to the moon your weight would change because the pull of gravity is weaker there than on Earth but, your mass would stay the same because you are still made up of the same amount of matter.
The true test would be to take both bags to the moon and see which weighs more, then you see which has more mass. Feathers looks to be correct because there's more of them, but each feather is made of less matter than the lead bars. I would think since they weigh the same on earth they would weigh the same on the moon thus having equal mass totals.
Kilogram is a unit of mass, no matter how you want to spin it. Therefore, this question has no correct answer. Now if you wanted to rephrase your question using "matter" instead of "mass" then I suppose it would make sense.
Author of the TB Add-Ons Suite.
Well, I figure it like this.
ASSUME the question is meant to be answered. That means one answer is right.
Now, we ASSUME that "1 kg" is weight (what a scale would say when you put the bag on it), not mass, because that's the only way there can be a difference between the answers.
And we ASSUME that the bags are packed in a way that makes sense, and not in a vacuum.
Now, the only sane answer becomes: the bag of feathers has more mass.
no...your just not measuring your weight... your measuring your mass. You getting confused in the semantics of scales "weighing" weight
That's funny hirsute. Our scales do tell us kilograms when we step up on them, we must all be wrong then! :P