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Jittu from DAV PUBLIC SCHOOL , asked a question
Subject: Science , asked on 27/5/15

which one is heavier 100 kg cotton or 100kg iron ?

Kiran Umesh , From Chinmaya Vidyalaya , added an answer
Answered on 30/9/09

Of course it is 100kg of iron

View More 7 Answer
Raj Shah , From Fr Agnel Multipurpose High School , added an answer
Answered on 30/9/09

both are same

Akanksha Sharma , From Fateh Public School , added an answer
Answered on 1/10/09

iron is heavier

Rahil Ahmed , From International Indian School , added an answer
Answered on 1/10/09

dude both r same!!! both r 100kg!!!

abdulrashed , added an answer
Answered on 4/10/09

both are same because both are of 100 kg each

freakyanushka... , added an answer
Answered on 16/10/11

 100 kg cotton will be heavier.

This is because...

Upthrust acts on both iron and cotton. Cotton has a lower density than that of iron and therefore the upthrust is more whereas upthrust is less on iron compared to cotton.

Now, we know that UPTHRUST= Actual weight-apparent weight

It is given that apparent weight is 100kg in both the causes.

We know upthrust is more on cotton.

Let us suppose upthrust on cotton is 10N

The, 

Upthrust= Actual weight- Apparent weight

10=Actaul weight - 100

110kg=Actual weight of cotton 

Even if the upthrust on iron is 9.9 N

Then, 

Upthrust= Actual weight - Apparent weight

9.9=Actual weight- 100

109.9=Actual weight

PLEASE NOT THAT WE ARE ASSUMING THE MAGNITUDE OF UPTHRUST! :)

Therefore, Cotton is heavier! 

Crazy , From Modern School , added an answer
Answered on 10/3/13

Cotton is heavier. Surely 

Kamlesh Bhatt , added an answer
Answered on 27/5/15
Both weigh the same, 100 kg. So although their densities are different, they will weigh the same. 

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