Question

You have a bag of cotton and an iron ball, each indicating a mass of 150 kg when measured on a weighing machine. Which one is heavier?

• A. The cotton bag is heavier than the iron ball
• B. The iron ball is heavier than the cotton bag
• C. Both are equally heavy
• D. Can't be determined

Answer 1

The correct option is A The cotton bag is heavier than the iron ball

We know that the true weight is equal to apparent weight and upthrust. The cotton bag is heavier than the iron ball. This is due to the reason that the bag of cotton which has more volume (as it has less density) than the iron ball (which has more density), experiences more upthrust due to air.