00:01
We have two balls of same mass m equals to 0 .9935 kg and they have same charge cube.
00:07
And we have to determine this same charge q and they are hanged from the ceiling with identical string of length l equals to 1 .235 meter as shown in the figure and the angle of the string with respect to vertical is theta equals to 22 .35 degree.
00:25
Okay.
00:26
Now so in this question we have to determine the charge.
00:30
So, from the given diagram, we can write that in the summish, uh, in the x direction, summation of fx, this will be equals to zero.
00:38
So from here, we can write that t sine theta, this will be equals to electrostatic force and electrostatic force is equals to k, q square, divided by d square from the diagram.
00:49
And in the y direction, summation of fy, this must be equals to zero for the equilibrium condition...