Question

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

• A. Zero
• B. Equal to the weight of liquid displaced
• C. Equal to the weight of the body in air
• D. None of these

Answer 1

Answer: (A)

Zero

Answer 2

Up thrust on the body $= v\sigma\mspace{6mu} g$. For freely falling body effective g becomes zero. So up thrust becomes zero