1. The problem statement, all variables and given/known data If you submerge a 3cm cube of ice in cup of water, with what force will the ice float up to the surface 2. Relevant equations ρgV, F=ma, ρgh 3. The attempt at a solution I thought to draw free body diagram of vertical forces with mg of ice cube and ρicegAhtop surface as negative forces and positive buoyant force of ρwaterg(htop surface+.03cm)A summing to Fnet. End up getting ρwatergV-ρicegV=F I just want to make sure I got the right densities in right places, in other words when do you use the density of water and when do you use the density of ice?