A body floats in a liquid contained in a beaker. The whole system shown in the figure is falling under gravity. The upthrust on the body due to liquid is:

Question

A body floats in a liquid contained in a beaker. The whole system shown in the figure is falling under gravity. 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-svwvvflleyo8cwqz.jpg" /> (A) Zero. (B) Equal to weight of liquid displaced. (C) Equal to weight of the body in air. (D) Equal to weight of the immersed body.

Tardigrade Admin · Accepted Answer

As system is falling freely under gravity, hence effective value of acceleration of the system is zero. Hence, upthrust on the body due to liquid is also zero.

Q. A body floats in a liquid contained in a beaker. The whole system shown in the figure is falling under gravity. The upthrust on the body due to liquid is:

Zero.

Equal to weight of liquid displaced.

Equal to weight of the body in air.

Equal to weight of the immersed body.

As system is falling freely under gravity, hence effective value of acceleration of the system is zero. Hence, upthrust on the body due to liquid is also zero.