Oh, what a lovely question! Both 1kg of feathers and 1kg of stones weigh the same because they both weigh 1 kilogram. Isn't that just delightful? It's all about the weight, no matter what the items are made of. Just remember, every little question is a happy little accident waiting to be understood.
No, 1kg of feathers is not heavier than 1kg of stones. Both quantities weigh the same, as they both equal 1 kilogram. Weight is a measure of the force of gravity acting on an object, and in this case, the weight of both quantities is equal. The volume and density of the feathers and stones may differ, but their weight, in this case, is the same.
It's a trick question, but with a not-so-trick answer:
The expected "correct" answer, is that since both "weigh" 1kg, they both have the same weight, and so neither one is heavier.
The CORRECT answer actually depends on a few more details, which will be explained in steps as follows:
1) The kg is a unit of mass, whilst weight, in the correct meaning of the word, is a measurement of forcemeasured in Newtons.
2) Force = mass x acceleration
-> Weight = mass x acceleration-due-to-gravity (g = 9.81 m/s2)
So up until now, we could argue that the stones and the feathers each have a weight of approx. 9.81 Newtons. However, so far we've only calculated the downward force on the two objects due to gravity.
Assuming that we're measuring the weight of these two objects somewhere on Earth, we must also consider the effects of the Earth's atmosphere, specifically the upward force this causes. Since air is a fluid, we must consider the effects of upthrust on these two objects:
3) Upthrust = weight-of-displaced-fluid
Now this is where things start to get interesting! Since we can safely assume that stone is more dense than feathers, then for the two objects to have the same mass of 1kg, the volume of the feathers must be greater than the volume the stone. Therefore, they will displace more of the fluid (air):
4) Stone-upthrust < Feathers-upthrust
So, getting back to weight:
5) Weight = downforce-due-to-gravity - upthrust-from-fluid
So, since the downforce due to gravity is equal in both instances, BUT the feathers produce more upthrust, the weight of the stone is, in fact, greater than the weight of the feathers.
Therefore, if they are both measured at the same location on Earth, 1kg of stone will be heavier than 1kg of feathers.
(Just don't tell your school Physics teacher this, unless you want him to think you're a smart-ass :-)
Since they both have a weight of 1kg one cannot be heavier than the other.
Nooo, 1kg gold is heavier 1kg cotton, because the last one has much more volume than the first, so Archimedes force reduces weight of a cotton more!
1kg = 1000g
1 kg is heavier. 1kg is the same as 1,000 grams, which is clearly bigger than 900 grams.
1kg = 1000g7.75kg = 7750gSo, 7936g is heavier
Yes, 1kg of feathers is equal in weight to 1kg of stones. However, since feathers are less dense than stones, the volume of 1kg of feathers will be much larger than the volume of 1kg of stones.
Since they both have a weight of 1kg one cannot be heavier than the other.
Since they both have a weight of 1kg one cannot be heavier than the other.
1.000000001 kg is heavier
Cotton is a very lightweight plant, and fabric. Metal is much heavier than cotton.
820g
Both 1kg of sand and 1kg of cement have the same weight as they are both 1kg. The weight remains the same regardless of the material.
Nooo, 1kg gold is heavier 1kg cotton, because the last one has much more volume than the first, so Archimedes force reduces weight of a cotton more!
1kg = 1000g
1kg is heavier because 1kg is equivalent to 1000g 700g is equal to .7kg
Because it would be a lot smaller.and also feathers weigh les so that would be more feathers you would have to carry.; )
As long as they're both on the same planet, every kilogram weighs the same. Put 1 kg of stones and 1 kg of feathers (or 1 kg of smoke or 1 kg of water or 1kg of dust) on opposite ends of a see-saw, and they balance.