00:01
In this question, we have been given a 75 times 75 times 12 dimension angle, which is used as an cantilever.
00:12
Okay, so this is the cantilever which we have been given with face ab horizontal as shown in the figure.
00:20
A vertical load of 3 kilo newton is applied at the tip of the cantilever, okay, which is 1 meter long.
00:26
So it is also given that it is one meter long.
00:32
We need to determine the stress at a, b and c.
00:37
So first of all, what i will do, this is my area a1.
00:44
This i will consider as the area a1 and for area a2, i will consider this much reason.
00:51
Okay.
00:53
So for area a2, this is what i will consider.
00:58
So this total is 75 year.
01:01
Now if i consider only this part, so i am leaving this 12, so 75 minus 12, it will be 63 mm.
01:09
Okay, and along this i will consider my area a2.
01:14
So here i will write down my area and what is my xi and yi.
01:20
So area a1, it comes out to be 75 is the breadth and the length is 2.
01:30
So 75 is the length and the breadth is 12.
01:33
Okay, so in this case area is 75 times 12.
01:37
So and xi is 37 .5 and this is 6.
01:42
Similarly, i will write area a2.
01:44
It will be 63 times 12.
01:46
So this comes out to be 756 and it is 6 and 93 .5...