which one is heavier 100 kg cotton or 100kg iron ?
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
Upthrust= Actual weight- Apparent weight
10=Actaul weight - 100
110kg=Actual weight of cotton
Even if the upthrust on iron is 9.9 N
Upthrust= Actual weight - Apparent weight
9.9=Actual weight- 100
PLEASE NOT THAT WE ARE ASSUMING THE MAGNITUDE OF UPTHRUST! :)
Therefore, Cotton is heavier!
Cotton is heavier. Surely
Of course it is 100kg of iron
iron is heavier
both are same because both are of 100 kg each
both are same
dude both r same!!! both r 100kg!!!