Simplify the following text for a Grade 9 native English-speaking person.
Original: with the clarifications that for a sunken object the volume of displaced fluid is the volume of the object , and for a floating object on a liquid , the weight of the displaced liquid is the weight of the object .
Simplified: For a sunken object , the volume of displaced fluid is the volume of the object , and for a floating object on a liquid , the weight of the displaced liquid is the weight of the object .