In one or two sentences, explain how Archimedes principle can be used to find out an object's density if you already know its mass.

Answer 1

Archimedes principle states that the buoyant force acting on an object is equal to the weight of the fluid it displaces. By submerging the object in a fluid and measuring the change in weight, you can calculate the volume of the displaced fluid and thus determine the object's density by dividing its mass by its volume.