Question

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

• 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

Answer 1

The correct option is A Zero

When the beaker is allowed to fall freely, apparent weight of the body becomes zero i.e. body exerts no force on water. Hence no water is displaced due to weight of the body. So buoyant force i.e. upthrust will also become zero.