Hi, I'm having trouble with a conceptual problem: 1. The problem statement, all variables and given/known data There is a block of wood in a jar with water; it is floating. If I pour oil into the container, obviously the oil sits at a layer above the water. The wooden block touches the water, oil and air now. Did the volume of the block in air decrease/increase/stay the same after adding oil? 2. Relevant equations FB = ρvg 3. The attempt at a solution I thought that since the block is still floating, that the force of gravity (Fg) and the buoyant force (FB) are still balanced. With this, you can see that the block of wood displaces the same weight of fluid. Since oil is less dense than water, (a smaller ρ), "v" (in this equation FB = ρvg) must increase since FB is unchanged. Do have the concepts wrong? Is this a correct explanation of what would happen? Thank you!