A body floats in a liquid contained in a beaker. The whole system as shown falls freely under gravity. The upthrust on the body due to the liquid is

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Zero

Equal to the weight of the liquid displaced

Equal to the weight of the body in air

Equal to the weight of the immersed position of the body

answer is A.

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Detailed Solution

Upthrust =Vρliquid(g−a) where, a = downward acceleration, V = volume of liquid displaced But for free fall a = g ∴ Upthrust = 0

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