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 metal 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 metal 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 metal. Therefore, they will displace more of the fluid (air):
4) Metal-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 metal is, in fact, greater than the weight of the feathers.
Therefore, if they are both measured at the same location on Earth, 1kg of metal 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 :-)
Yes. Since they both have a weight of 1kg one cannot be heavier than the other.
Neither. Since they both have a weight of 1kg one cannot be heavier than the other.
Both 1kg of iron and 1kg of cotton would have the same weight in a vacuum. Weight is determined by mass, which is the same for both objects in this scenario.
Both of them are just the same. A kilogram is the same as akilogram
A kilogram of feathers is 1kg 2.3 pounds of lead is 1.04326245 kilograms Using Newton's First Law We have that Fnet = ma This meaning that the net force of the 2 items is due to the product of the objects mass and the acceleration which acts upon it. The result is measured in Newtons. The acceleration in this case is gravity which is 9.8 m/s2 average here in the earth, this value changes due to the position the object is in the earth, the closer you are to the equator the closer you are to 9.8 m/s2. Now We have that 1kg of feathers weights = (1kg) * (9.8m/s2) = 9.8 N 1.04326245 kg of lead weights = (1.04326245kg) * (9.8m/s2) = 10.22397201 N Now we can conclude that 2.3 lbs of lead weight more than 1kg of feathers.
Cotton is a very lightweight plant, and fabric. Metal is much heavier than cotton.
Yes. 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.
1kg = 1000g
1kg is heavier because 1kg is equivalent to 1000g 700g is equal to .7kg
Since they both have a weight of 1kg one cannot be heavier than the other.
1kg=2.2lb 300g=10.6oz answer 1kg
1.000000001 kg is heavier
Neither. Since they both have a weight of 1kg one cannot be heavier than the other.
1kg = 1000g7.75kg = 7750gSo, 7936g is heavier
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!
Because it would be a lot smaller.and also feathers weigh les so that would be more feathers you would have to carry.; )