10.3 Archimedes' Principle
Buoyant Force

 

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Explanation:
The utility illustrates Archimedes' principle as discussed in Section 10.3.  The floating block has a density less than or equal to that of water.  When placed in water, the amount of liquid displaced (and collected in the overflow container to the left of the bucket of water) is equal in volume to the volume of the submerged portion of the block. The pressure in the liquid as a function of depth is shown on the graph to the right of the bucket.   Note that it follows the linear behavior discussed in Section 10.1, Equation 10.3.
The oscillatory behavior obtained by pushing the block below its equilibrium position is discussed in chapter 14 and problem 14.36.
 
Source:
Fu-Kwun Hwang