00:01
Again, we have two mechanisms, in this case two angled bars or structures here.
00:10
And they're connected at point c here.
00:13
This one is on top, so this one looks kind of like this before we take it apart.
00:20
So we have an internal load at c.
00:24
And let's see here, we have a force either at b or at d.
00:29
And in the two cases we're looking for whether we put it here up on this bar or down on this bar.
00:37
And then each bar is connected to ground at a pivot point at point a and e.
00:43
So i just drew position vectors or wrote position vectors to each point in the problem.
00:52
I use point a as the origin.
00:55
So given the information in the problem, we can write all those position vectors.
01:02
Fb is in the vertical, is the applied load, and it is 750 newton's in the downward direction, and it's either applied at point b or at point d.
01:15
So i solved the problem generally with both of them included, and then we can set one to zero.
01:25
They get both the, each of the answers...