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  4. A body floats in a liquid contained in a beaker. If the whole system as shown in figure falls freely under gravity, then the upthrust on the body due to liquid is <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-mfrcsclfe6vy5r9f.jpg />

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Q. A body floats in a liquid contained in a beaker. If the whole system as shown in figure falls freely under gravity, then the upthrust on the body due to liquid is
Question

NTA AbhyasNTA Abhyas 2020

Solution:

Up thrust on the body $=v\sigma g.$ For freely falling,body effective $g$ becomes zero. So up thrust becomes zero