A 0.5kg block of wood is floating in water. What is the magnitude of buoyant force acting on the block? I know that Fb = (density)(g)(V) The density of water is 1000kg/m3. g = 9.8m/s There is no way i can calculate the volume of the block with the given information. Also i know the water displaced equals the weight of the block. What am i missing to get the buoyant force?