00:01
Hi there, so for this problem, we have this net force, well, all of these forces that we have shown in this diagram.
00:10
Now, we are told that the net force in vector form is just simply the sum of all of these vectors, and that and this is equal to four in the x direction.
00:34
And of course this is in units of newton's.
00:38
Now, what we need to answer for part a of this problem are the components of the vector 3.
00:49
Now, with that said, we can start by separated the net force in its ex -component, so that will be the x component of the vector 1 plus the x component of the vector 2 plus the x component of the vector 3 plus the x component of the vector 4.
01:11
And then this should be equal to 4 mutons.
01:16
Now, as you can see from this and from this picture, now the force f3 and the force f1 do not have an x component.
01:31
As you can see in here, these two forces have only an y component.
01:38
So we can say that this is zero and also this is zero.
01:44
So from this we will obtain that the s component of the force 2 plus the s component of the force 4 is equal to just simply 4 neutums.
01:59
Now, we do the same for the white component of the net force.
02:06
So as you can see from this picture, the only one that doesn't have a light component is the force f4.
02:20
But the other three forces has a component in that direction.
02:26
So we will have the force two, the white component of a force.
02:31
Force 2 plus the y component of the force 3 plus the white component of the force 1.
02:39
And then this should be equal to 0 because remember that the net force only has an x component.
02:51
So with that set, since we won the.
03:01
So for the first part, we are asked about what is the x component of the force 3 and we immediately we can answer that by just seeing by just looking at the image in here so the x component of the force 3 is 0 and the other one is the one that we can determine from this because we can solve for the white component of the force 3 so that will be minus the magnitude of this minus the component of the force one.
03:40
So now we just simply substitute the numerical values that we are given from this.
03:46
As you can see from the picture, the y component of the force 2 should be positive because the vector is pointing upward...