00:01
Okay, so hello.
00:03
We'll be answering the first problem in chapter 11 called angular momentum in the book, businesses for scientists and engineers with modern physics by douglas e.
00:20
I can't say that, genocke, in 2008.
00:27
Sorry if i missed bronze that.
00:30
So the question's asking, if there was a great migration of people towards the center of earth's equator, pretty much what would happen to the length of the day.
00:38
Now, great migration of people is really what it's saying is what will happen if a large mass moves from here to maybe, or in here, towards the equator.
00:51
Right? and then what would happen to its day, which is a period, so what would happen to the speed that earth rotates? now, because we're in the angular momentum chapter, i'm going to make the assumption that the correct answer has something to do with angular momentum.
01:07
And the three answers that involve that are, does the day get longer? does it get shorter, or does it remain unaffected? well, i'm going to make an assumption that we're using the actual shape of the earth, which is an oblate sphere, which means it actually, due to its spinning motion, it gets squished...