hello i have trouble understanding this problem... hope u guys can help. heres the question: 'when a beaker of water rests of a balance, the weight indicated in X. a solid object of weight Y in air displaces water of weight Z, when it is floating. what will be the final reading of the balance?' according to the answer the reading should be X+Y+Z I understand that X should be included (duh) but im confused about Y and Z. Why is the weight of the water displaced included? The water that is displaced comes from the water that is already in the beaker so shouldnt its weight be already included in the X? Also i understand that for an object to float upthrust must be equals to the weight of the object, if they are equal shouldnt the two forces cancel each other out and hence, there is no Y?