Consider a uniform wooden block floating in a container filled with water such that exactly seventy percent of its total volume is submerged beneath the water surface. If the entire experimental setup is placed inside a freely falling elevator, what fraction of the block's volume will remain submerged?

💡 Solution & Explanation

In a freely falling elevator, effective gravity becomes zero, which eliminates the pressure gradient in the liquid and removes the upward buoyant force, causing the buoyant equilibrium to vanish and the block to submerge completely under surface tension and random immersion. Buoyancy fundamentally relies on the weight of the displaced fluid under gravity. Archimedes' principle governs hydrostatic floatation.