00:01
For number 22, we're given an angular velocity versus time graph, and we're to make an angular position versus time graph of the same motion.
00:12
The area under the curve of this angular velocity time graph is the position.
00:20
So i'm just going to go through and find these areas.
00:22
So here, 20 by 2.
00:24
So in the first two seconds, it goes 40 radiance.
00:28
And then the next two seconds, it goes two seconds times 10.
00:36
It goes 20 radiance.
00:38
For this one, it's at rest, so it doesn't cover any.
00:41
And here it's just going in the opposite direction, but another 20 radiance.
00:46
So you can tell i need a total of 60 in the positive direction here.
00:50
So i'm just going to set up my scale on this graph.
00:55
20 radiance, 40, 60...