00:01
Hello, two positive charges of two microculems are located at 0 and 0 .30 meters and at 0 at negative 0 .30 meters respectively.
00:34
The third point charge, which is also positive, but for microcultums is located at 0 .40 .0.
00:46
Here we have to find the net force exerted on charge 1 by two other charges.
00:52
So we have to find f1.
00:55
Let's illustrate this system.
00:59
So let's first start with the y and x axis.
01:02
Here let's show q1 that is at x0 .y 0 .30.
01:12
So that's q1.
01:13
Q2 is at 0 negative .30.
01:19
And q3 is at 0 .40.
01:26
So therefore q3 is somewhere here.
01:32
And we have to find the total force exerted on the charge 1.
01:37
All forces are positive.
01:39
All charges are positive.
01:41
That's why f1 equals to vector sum of force created by charge 2 and by charge 3.
01:53
Let's show the direction of these two charges.
01:57
F2 is directed straight up and f3 is directed like this.
02:09
So therefore, here we can use a coordinate method to find f1.
02:19
F1 equals to square root of f1 x squared plus f2, f1y squared...