How Does Throwing A Rock Off A Boat Affect The Water Level?
This puzzle is best visualized using an "extreme case." For example, imagine that the rock you have is small, but extremely heavy. You can also picture a boat in a small container, rather than a large lake. That should help you to reach the solution!
from Physics Girl
Key Facts In This Video
Archimedes' Principle states that the buoyant force on an object underwater is equal to the weight of the volume of water that the object displaces. (1:06)
Using an "extreme case" to approach a problem allows people to visualize the problem's elements and solve it more easily. (1:59)
Here are two more problems that lend themselves well to "extreme case" solving: (3:25)