00:03
Here we have two bars or two linkages, one here and one here, and there's a pulley attached here and a pulley attached here, and then a cable coming down, and then it attaches here.
00:15
And there's a load on the cable.
00:19
So, again, i just drew free -by diagrams of everything here, and we can some forces and moments on the whole structure, the structure as a whole, or any one of the individual components here.
00:32
I used the results from the previous problem to just replace the pulleys with just points here, but we have to be a little careful if we some forces moments on the tire body because the load from the pulley actually acts off at the edge here because of the pulley's radius.
00:59
So here are all the vectors to each point in the way.
01:03
The problem and then i also define a prime which is 0 .25 meters to the right but to the left of point a and that's where the reaction force from the tension in the cable acts on the entire body.
01:29
So when we some forces on the entire body we get the tension in the cable, and then fd and f .e.
01:37
F .a.
01:38
Cancels out.
01:41
T here cancels out and all these other internal forces cancel out.
01:45
This does not cancel out, but it actually acts over off the body a little bit here...