1. The problem statement, all variables and given/known data A block of wood floats on water. The density of the wood is .634g/cm^3. Its mass is 243 g. Find the minimum mass (g) of lead we must attach to the block so that it will sink, along with the lead. The density of lead is 11.3 g/cm^3. Caution: you must take into account the buoyant force on the lead, as well as on the wood. 2. Relevant equations B=pgV=Mg(weight of fluid displaced) 3. The attempt at a solution I know that I must apply bouyancy principles to Newton's Second Law but I am not sure exactly how to set up my equations. How should I attack this problem?