Sinking bodies
Fill the overflow can with water to the level of the spout. Select a stone that will go inside the overflow can. Attach a string to the stone and weigh it with a spring balance. Weigh the catch bucket. Place the catch bucket underneath the spout. Immerse the stone in the water and record its weight. Does it weigh the same as in air'? Collect the displaced water and determine its weight by subtracting the weight of the bucket from the weight of the catch bucket and water