WBCS.LIVE practice question

A body is floating in a liquid, partly immersed. If the entire apparatus (body and liquid) is taken to the Moon, what will happen to the immersed fraction of the body?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. It floats with a greater part immersed.
  2. It floats with a lesser part immersed.
  3. It completely sinks.
  4. It floats with the exact same part immersed.

Correct answer and explanation

Correct answer: It floats with the exact same part immersed.

Explanation: āœ… Correct Answer: D) It floats with the exact same part immersed. šŸ“š Explanation: A highly common misconception is that the body will float with a "lesser part immersed" due to the Moon's weaker gravity. However, in reality, both the weight of the body (mg) and the buoyant force of the displaced liquid (Vpg) depend directly on gravity. Since gravity (g) mathematically cancels out from both sides of the equilibrium equation, the submerged volume fraction remains completely unchanged.