It's one old cheat question, world often confuse mass and also density and assume steel is the correct answer.

You are watching: Kilogram of steel vs kilogram of feathers

Strictly speaking, a kilogram is not an unit of "heaviness", yet of mass. Depending on your an interpretation of "heavy", a kilogram the steel can be heavier. That's since a kilogram of feather is larger, and also thus much more buyoant in the bordering air.

For example, if the two sit ~ above a platform at sea level in the atmosphere, the stole kg exerts a greater pressure on the platform, or "feels heavier" for the platform.

For an instance that far better shows the impacts of buyoancy: a kilogram the helium balloons vs a kilogram of steel.

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level 1
· 5y
It may also be therefore video: linky

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level 2
· 5y

WOS HEVEAH

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level 2
· 5y
Was a meme/popular video on Tumblr not as well long earlier so an extremely plausible.

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level 1
· 5y

It's a old cheat question.

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level 1
· 5y
level 2
· 5y

That's the dumbest point I've review in a while. The concern was "An ounce of feather or an oz of gold".

At no point was it said "An oz of feathers and a troy ounce that gold".

That's prefer saying "What's heavier, an oz of feather or an ounce of gold" and the answer being "The feathers! Feathers are measured in tons, so an ton-ounce of feathers is heavier".

A trojan ounce of feather is the very same as a troy ounce of yellow BTW, therefore the price is the same.

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level 2
· 5y

Precious metals are weighed making use of Troy ounces

Except, ya know, as soon as they're not, favor in the context of this question. A scale doesn't sense as soon as you put precious metals on it and also convert native the normal standard.

I'd tell friend it's choose saying that a dozen doughnuts is more than a dozen eggs because a baker's dozen is in reality 13, yet I'm concerned you'd agree with me, fairly than gain the point.

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level 1
· 5y

They space wrong. Or maybe referring to the feather metaphor where friend lie and they spread and you have the right to never acquire them every back

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level 2
· 5y · edited 5y

They are wrong

Seriously relies on the context.

In a physics class "steel is heavier" will be correct due to several reasons.

Let's to speak the question is "you've acquired steel v the massive of one kg and fathers through the very same mass and also put castle on a scale here on earth. Which one weighs more?".

See more: The Set Of Positive Even Numbers Less Than 10, What Are Even Numbers

Now come someone with grade school knowledge if physics it's apparent that it's a cheat question, however to physicists it's noticeable that buoyancy and also gravity both have an effect. (feathers need much more space, thus the center of fixed is further away native the facility of fixed of earth compared to the center of mass of steel)

tl;dr: it's a trick inquiry unless you examine physics

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