00:01
The first thing that we need to appreciate when answering this question is the calculation of the principal stress.
00:08
By definition, the principal stress is going to be equal to the stress in the x direction divided by 2 plus the square root of the x direction stress divided by 2 raised to the power of 2 plus tau in the x and y blink.
00:26
So based on this, what would need to do is to move on to determining the values of his stress in the x direction and that of a tau in the x -y plane.
00:41
And to do that, we need to first of all appreciate that the stress in the y direction is equal to zero.
00:48
And the stress in the x direction is going to be equal to negative md multiplied by y divided by the value of i.
00:57
And this expression right here, this md, this md is as good as negative 7 over 8 pl.
01:09
And for this would have an i value that is equal to bh cubed divided by 12.
01:19
And if we make the substitutions, we are looking at an i value that is equal to 0 .437.
01:28
By 10 to the power 7.
01:31
Then moving on to determining this y value, this y value is equal to h divided by two minus the value of...