Question

A cotton bag and and bar each indicating a mass of 100kg on weighing machine.in reality which is heavier and why

Answer 1

ANSWER
..............................

# The iron bar is heavier than the bag of cotton.
% because the surface area of thecotton bag is larger than the iron bar.

& & THAT IS WHY more buoyant force acts on the bagthan that on an iron bar.

@@@This makes the cotton bag lighter than its actual value. Forthis reason,

********the iron bar and the bag of cotton show the same mass on the weighingmachine, but actually the mass of the iron bar is more that that of the cotton bag

$= = = = = = =$

Answer 2

Answer:

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.