Density is a measure of how heavy something is compared to its size. If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float. Density ...

But objects that are more dense than water (at the surface) will sink until the forces are equalized. Ships, you may have noticed, generally don't sink. They are filled with all kinds of other ...

The sinking only stops when the object reaches the bottom and an extra ... Under the surface, the weight of water you displace - the upthrust - is more than your weight, so there is a resultant ...