00:01
So for a, we're trying to find the buoyant force, and for b, we're trying to find the force tension.
00:05
So let's draw this system.
00:06
We have the mass here.
00:10
We have the buoyant force.
00:13
You have force of gravity, and we have force of tension.
00:18
Now the diameter is going to be equal to 5 .20 meters.
00:24
And then we can say that the mass is going to be equal to 74 ,400 kilograms.
00:35
So this means that for part a, the buoyant force can be calculated by taking the density of water times the volume of the water displaced times gravity.
00:44
So this will simply be the volume of the density of the water times gravity.
00:50
And then for v sub w, the volume of the water displaced, it will be 4 pi over 3 times d over 2 cubed.
01:02
And we find that the force, the buoyancy force is going to equal pi...