00:01
Hi friends, here it is given two pith walls, each of mass, one gram, both carrying the same charge.
00:15
One pith wall is connected, sorry, one pith wall is suspended vertically.
00:24
And another pith wall is brought here at the separation of three centimeter.
00:41
Then this angle is given 30 degree.
00:46
We have to find the value of charge on each pith wall.
00:50
Forces are weight mg, electrostatic force, k, q into q upon x square, and tension in the spring.
01:07
T tension can be resolved into two components, t -cos of theta and t -sign of theta at equilibrium.
01:23
T -sign of theta is k, q -square upon x -square and t -cos -of -theta to be.
01:36
M into g...