Question

. A balloon filled with hydrogen has a volume of 1 m’ and its mass is 1 kg. The
volume of the block of a very light material which it can just lift is (Density of
material of block is 91.3 kg/m' and that of air is 1.3 kg/m']​

Answer 1

Step-by-step explanation:

density of block =91.3kg/m

3

uplift from air =1.3kg×g

Downforce from balloon =1kg×g

So,

Extra weight that can be lifted =0.30gN

So, Considering buoyant force on itself,

⇒0.30g+1.3vg=91.3vg [where V is Volume of the block]

⇒0.3=90V

⇒V= 1/300 m³

Answer 2

Answer:

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