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A piece of wood floats in water kept in a beaker moves with a vertical acceleration a, the wood will

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a
sink deeper in the liquid if a is upward
b
sink deeper in the liquid if a is downward, with  a<g
c
come out more from the liquid if a is downward, with a>g
d
remain in the same position relative to the water.

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detailed solution

Correct option is D

Remain in the same position relative to the water. We know when a wooden piece floats in a water kept in a beaker at rest we get mg=ρwvg , when beaker is accelerated in vertically upward direction then we get mg+a=ρwvg+a

We observe the volume of water displaced remain same so wooden piece remain in same position relative to water.

 

 

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