00:01
We have this setup.
00:02
Our goal is to find the reactions at points a and b.
00:06
So the first thing i'm going to do is find the single point forces f1 and f2 that correspond to these extended forces.
00:17
So we know that f1 of x, so it looks like that.
00:43
So that f1 will be that integral of all that stuff.
00:56
That's 50.
01:11
So then we also have to figure out where it's located.
01:35
It's called that x1, and that's going to be this integral.
01:50
So the left -hand side.
02:10
So i'm going to redraw the free body diagram.
02:19
Okay, so now let's get the forces in the x and y direction.
02:25
So i put in a single force at f8 because it's got a roller, so it only has that.
02:30
At b, we have both.
03:39
And then we need a torque or moment equation.
03:45
So i'm going to choose this point here at point b is my center for calculating torques...