Question

A body floats in a liquid contained in a beaker. The whole system as shown in the figure falls with constant acceleration a₀. The upthrust on the body due to the liquid is –

• A. Zero
• B. Equal to the weight of the liquid displaced
• C. Less than the weight of the liquid displaced
• D. Equal to the weight of the immersed portion of the body

Answer 1

Answer: (C)

Less than the weight of the liquid displaced

Answer 2

Since system is falling with a₀, hence buoyancy force is less than weight of liquid displaced.