00:01
The answer to this question is obvious if you've ever seen a piece of wood in water.
00:05
But let's do a thought experiment.
00:08
Now, let's say our container is full of water.
00:11
I'm sorry, full of some fluid whose density is greater than the density of an object.
00:18
Now, as the object is lowered into the water, the buoy force on it increases.
00:25
The weight of the object is obviously mg, which is volume times g, times its density, let's call it row object.
00:37
And the point force is obviously volume submerged times g times density of the fluid.
00:46
So obviously the density of fluid is larger than density of object, which means these two, when these two are equal, the submerged volume will be smaller than the total volume.
00:58
Well, let's write it again...