First slide
Fluid statics
Question

A weightless rubber balloon has 100 g of water in it. Its weight in water will be:

Moderate
Solution

  • When balloon in air w=mg=0.1g.when it is in water net force F=Fb-w=vdg-w here volume=m/d, so F=w-w=0 so answer is 4th option is correct

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