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which is heavier 1kg. of iron or 1kg. of cotton?and why?

Answers were Sorted based on User's Feedback



which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / lallu lal

same.

Is This Answer Correct ?    158 Yes 95 No

which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / anurag

Both are same.The mass of each is 1 kg.But 1 important
point the weight of two may not be the same(mg).This is
because as the cotton is porous and can have some air
inside its pores as well as its volume will be
considerable.It will experience an upward buoyant
force.Hence the effective weight=the weight mg(act down)-
the upthrust(act up),which is volume of cotton(net with
pores)*density air*g.

Is This Answer Correct ?    94 Yes 38 No

which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / palash

The question is which one is heavier.The question is not which one will fall soon.So no buoyancy effect comes into picture.

what rest is the weight.Now w=mg.
1 kg mass is a constant and standard value in anywhere in the universe.
So both iron and cotton are having same amount of matter
(1 kg) in it.

Remember the air inside the cotton will not be taken into account as we are taking pure 1kg of cotton.If you are taking air then it will be more than 1 kg of cotton.

So they will experience (1*9.81) N both in earth ground.
So the answer of the question is they are same as weight though volume of 1 kg cotton is larger than 1kg of iron.


***********
(If they are freely falling then the cotton will take much time due to large volume and so bigger buoyancy effect of air.
In space they will take same time to fall a distance.)

Is This Answer Correct ?    48 Yes 18 No

which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / g.s.mahesh

BOTH ARE 1 KG....ie THE MESS IS SAME.......

Is This Answer Correct ?    94 Yes 67 No

which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / shekhar

The popular belief that buoyancy or the upthrust force only acts in case of a fall is false. Let's say you are underwater in a submarine and you step out of it into the water will you not get pushed up to the surface(if you don't apply any external force)? Every fluid has an upthrust force magnitude of which depends upon the density of the fluid. Now coming to the point. The atmosphere of earth is a fluid and therefore it offers an upthrust. The upthrust of course is more on the thing that occupies more space. In this case 1kg of cotton will obviously occupy more space than 1kg of iron and hence the upthrust on cotton will be more than the upthrust on 1kg of iron making the 1kg of cotton lighter than 1kg of iron. However in case of a vaccume both will weigh the same.

P.S - Rate this a "No" only if you have a counter valid explanation not because you think you're right.

Is This Answer Correct ?    30 Yes 9 No

which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / sayindlasneha

as weight=mass*g.........mass for both is 1kg n
g=9.81m/s2......so wieght is same.........

Is This Answer Correct ?    60 Yes 42 No

which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / sainyum

both will be equal because both are one kg. only difference
would be that iron would be a concentrated mass where as
cotton would not be that concentrated

Is This Answer Correct ?    52 Yes 35 No

which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / deepak

both will have same weight... both 1kg...

Is This Answer Correct ?    71 Yes 61 No

which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / anirban mukherjee

According to me cotton will be more lighter as air is a fluid and Archimedes principal applies on it. As cotton occuies more volume it will feel more upthrust and more loss in weight. Therefore it if lighter.

Is This Answer Correct ?    11 Yes 7 No

which is heavier 1kg. of iron or 1kg. of cotton?and why?..

Answer / p.v.prasad

both are same because weight is same in both cases but
quantity is different

Is This Answer Correct ?    30 Yes 29 No

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