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Q.

A cubical block is floating in a liquid with one third of it’s volume immersed in the liquid. When the whole system accelerates upwards with acceleration of g/2.

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a

The fraction of volume immersed in the liquid will change.

b

The buoyancy force on the block will change.

c

The buoyancy force will increase by 50 percent.

d

The pressure in the liquid will increased.

answer is B.

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Detailed Solution

If the volume immersed initially is  V/3). Then V3ρg=mg  (I)If the volume immersed when the system accelerates is V thenV′ρg+g2−mg=mg2⇒V′=V3
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