which is heavier a 1 kg. cotton or a 1 kg metal?

Question

equilibrium

Answer 1

If it was 1kg of Air, there would be no difference between them.
1 kg = 1 kg = 1 kg, no matter what the material is.

Answer 2

Depends. If the two objects are located in the same place, then they both are attracted by the same forces of gravity. In which case, from Newton's Law, we have the weight of the metal F = GmM/R^2 = f the weight of the cotton. m = 1 kg, the mass for both the metal and cotton, and, on Earth's surface, M is the mass of Earth and R is its radius.

But, and this is a big BUT, if one mass m is located on another planet of mass M'; then the force (the weight) on it could be quite different than the other mass still on Earth. That follows because F = GmM/R^2 <> GmM'/r^2 = f and F <> f in general. That is, because the other planet's radius r may not be the same as Earth's and because its mass M' may not be the same as Earth's, the weight of the metal and of the cotton, even though they are the same mass would very likely be different..

Even if both masses m were on Earth, they might still have different weights. This could happen if one mass m were at the Earth's surface R and the other were at R + h, some distance not equal to Earth's radius. This results because weight varies as the inverse of the square of the distance (R and R + h) between the masses m and M. Thus, even though the two masses are the same, their weights would be different if their distances from the center of the Earth are different.

So, as indicated at the outset, it depends.

Answer 3

i attempt to over imagine each and every thing, i understand the "accepted answer" imagine about this, a kg of cotton might want to have extra trapped air interior, so it is going to finally end up being tougher to flow round (using weight of the air) than the kg of metallic, it extremely is except the kg of metallic changed into metallic wool, and then it could be about a similar.

Answer 4

depends on the meaning of "heavier "
if u mean to compare the weight of them.... both are the same. (in condition that both are in a same gravity... for example both are in a same place on earth.)

but if you mean the weight we feel metal will be heavier ....
because cotton has a low density in compare with metal. and
Archimedes force of weather on cotton will be mor than on metal.
finally u will say : "1kg metal looks heavier !"

Answer 5

Both have same weight as the mass is the same.

Answer 6

They have the same mass

Answer 7

haha. clever.
i would have to say...


the cotton. (am i right, do i get a best answer?!)

Answer 8

They are equal.

1kg=1kg

Answer 9

they weigh the same