00:01
In this question, we are given this pulley system.
00:04
And at point a, the cable is moving to the right at 3 meters per second.
00:08
We need to find the speed of block b.
00:11
So to solve this kind of pulley system problem.
00:15
First, we need to identify the datum line, okay? and then we need to define some lengths.
00:29
Okay.
00:31
So at this point, you'll be from the data line to the new line will be sb.
00:41
Okay, and then from here, from this point to this point, i'm going to call it sd.
00:49
Okay, now i'm also going to call the fixed distance to the other side of the wall as b.
00:56
Okay, and it's fixed.
00:58
And we also have sa, which is from the data line to point a.
01:04
Okay, so in this question we see two cables...