1) My teacher says that the apparant weight of an object in water (floating,sunken,submerged etc) is equal to it's actual weight-buoyant force acting on it. That is, wt (ap)=wt (ac)- F(b) Where wt (ap) = apparant weight, weight (ac)= actual weight. And f (b) = buoyant force 2) But..., if an object is floating or is submerged under water, it's weight is completely supported by the buoyant force acting on it. So shouldn't the buoyant force be equal to the apparant weight of the floating object.? i.e., f (b)=wt (ap) The equations in 1) and 2) contradict each other. Please tell me where I am wrong.