If a object weighing 50 n displaces a volume of water weighing 10 n what is the buoyant force on the object?

The buoyant force on an object is equal to the weight of the fluid it displaces. In this case, the object displaces a volume of water weighing 10 N, so the buoyant force acting on the object is 10 N. This force acts upward, countering the weight of the object, which is 50 N. Thus, the object will sink since its weight is greater than the buoyant force.