00:01
In this problem, we have been given that there is a uniform bar, and this is having weight 25 newtons, and this is 6 meter long.
00:10
So if it is having weight, we assume that at the center, the weight will act, and that will be in the downward direction.
00:18
That's 25 newtons.
00:19
So two persons are carrying this uniform bar at each end.
00:23
So let's say at left end, person a carries, and at right end person b carries.
00:28
So a is exerting a force of 20 newtons.
00:32
So of course both of them will try to exert force in the poor direction in order to support the weight.
00:38
So that's 20 newtons.
00:40
And here we need to determine the place where 45 newtons is placed on the beam.
00:48
And also we have to figure out the force that's exerted by this person b.
00:54
So let's consider that force to be f, which is what we need to determine.
00:57
And now let's consider.
00:58
So first let's find out this force so that will give us the idea of the position where this 45 newton object can be placed on this beam.
01:08
So as we know that total force in the upward direction, that should be equal to the total force in the downward direction.
01:19
So the weight of this 45 newton object and the weight of this beam in the downward direction, that will combine and make 70 newtons.
01:29
And that will be equal to the total force in the upward direction...