Question

2. You have a bag of cotton and an
iron bar, each indicating a mass
of 100 kg when measured on a
weighing machine. In reality, one
is heavier than other. Can you
say which one is heaviet
and why?​

Answer 1

Answer:

bar, each indicating a mass

of 100 kg when measured on a

weighing machine. In reality, one

is heavier than other. Can you

say which one is he

Answer 2

The correct answer is cotton bag is more heavier than iron bar.

True weight = (apparent weight + up thrust)

The density of cotton bag is less than that of the iron bar, so the volume of cotton bag is more compared to iron bar. So the cotton bag experience more up thrust due to the presence of air.

Therefore in the presence of air the true weight of cotton bag is more compared to the true weight of iron bar.

hope it helps..