00:01
The given working load is 25 kn.
00:05
We have to calculate stress at the point a and b which are at the left of the given load.
00:16
So, let's begin with the question.
00:19
Let's draw the free body diagram for the given question.
00:23
The free body diagram will look like this.
00:25
This is a rectangular bar.
00:28
25 kn force is acting on it.
00:34
At the mid lies point b.
00:37
This point is known as the starting point.
00:39
We can name it as r1 and this point as r2.
00:45
The distance between point r1 and b is of 2 m.
00:48
Same is with r2 and b.
00:52
The force acting at r2 is 15 kn and the force acting from here is named as h1.
01:03
So, let's begin using the summation equation...