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You have a bag of cotton and an iron bar...

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

Text Solution

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We known that true weight `=` apparent weight `+` upthurst . The cotton bag is heavier than the iron bar. This is due to the reason that the bag of cotton which has more volume (as it has less density) experiencces more upthurst due to air.
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