The problem statement, all variables and given/known data Vessel contains water.It is placed on the pan of a physical balance.A solid(specific gravity=1) is suspended from an thread(from an independent support),such that it is immersed completely in the water. What the weight it reads? If the thread was tied to the arm of the balance,what would the weight have been? The attempt at a solution First Part: Water exerts a buoyant force on the solid.This results in a reaction force (equal and opposite). Thus the weight read is that of vessel with water+solid. Correct? Second Part: My book says it is equal to the weight of the vessel with water only.How it is so?How is it different from the first case?