00:01
Hello, in this question we are given something arrangement like this.
00:04
It is a simply supported beam.
00:05
P is acting over here and 1 .25p is acting over here and they are acting at a distance of 150mmm 150mm from both ends and distance between these two forces is 250mm so first of all you will calculate the reactions.
00:21
So to calculate the reaction first of all you will do sigma sigma ama would be 0 that moment above the end and a would be zero so r b could be calculated it is coming out to be plus 1 .25 into 400 divided by 550 so r b is coming out to be 1 .182 all right so similarly r a could be calculated now because some of both of them must be equal to the vertically download acting forces so that would be equal to 1 .25 so it is coming out to 1 .068 so r a and r b are calculated now what will be the bending movement and zero force diagram if this is 1 .068 p and p is acting over here and 1 .25 p is acting over here and this force is 1 .18 all right so now if you draw the shear force diagram it would be something like this positive and this magnitude would be 1 .06 then a downward drop would be here just a second yeah then there will be a drop of p and the remaining would be positive only but it would be a very small magnitude and that magnitude would be equal to 0 .068 p so again there is a drop of minus 1 .25 and this would become negative and it will be going to minus 1 .182 all right that's it so this would be the shear force diagram.
02:10
Similarly, we can draw the bending moment diagram now.
02:13
So the bending moment diagram would be there would be increase in the bending moment.
02:21
That would be 1 .068 into 250.
02:26
Sorry, 150 it is.
02:27
Yeah, the 160 .2p.
02:31
This is p.
02:32
This is p.
02:33
All right.
02:34
So again, it would be increasing from here to up to this point.
02:38
So this increment would be 0 .068 into 250 so that would be increment of 17 so this total would be total would be 177 .2 and then it like this and then there will be a straight downward because 1 .182 into 150 it will become 0 all right so that's it this is the bending moment diagram so the maximum bending moment is 177 .2 p newton millimeter sagging all right so now we will look at the section and the section was 10 m 10 m.
03:45
10 m.
03:45
50 m...