00:01
The ferris wheel diameter 20 rotates such that it completes one revolution in 40 seconds.
00:07
Passengers board the lowest car at height, three meters above the ground, and then the ride begins.
00:12
So before we go to the graph, let's get an image of what's going on here.
00:17
So we've got a ferris wheel.
00:19
Diameter 20 means the radius is 10.
00:24
And if you board at the bottom, and that's three meters above, that means our midline would be at 13.
00:34
Our max would be at 23 our min three all right so if we board at the minimum that would be at let me see what these go by and how many we got going on here two four six eight ten twelve fourteen sixteen eighteen twenty let's go by even if we maybe i'll use use the edge.
01:26
It looks like we could get pretty close that it can add.
01:30
So we'll have two, four, six, eight, ten, twelve, fourteen, sixteen, eighteen, twenty, twenty, two.
01:41
That's pretty close, but i'm going to use this.
01:46
And if the one revolution is in forty seconds, it's seemingly we're dealing with here, two, four, six, eight, ten, twelve, fourteen, 18, 20, 22, 24, 26, 28, 30.
02:04
Okay, i'm gonna go just by twos.
02:13
So at zero, when we board, we're three above.
02:19
The midline is at 13.
02:21
So 2, 4, 6, 8, 10, 12, 13.
02:29
I'm just graphing the midline.
02:34
And we're gonna do one cycle in 40 seconds, so that's going to be in 20 boxes.
02:44
2, 4, 6, 8, 10, 12, 14, 16, 18, 20.
02:52
So we'll have a minimum at 20 or at 40 seconds.
03:04
We'll have a maximum then at 20 seconds.
03:14
And that maximum will be at 23...