Two small balls having equal positive charge q coulomb are suspended by two insulating strings of equal length ' l ' meter from hook fixed to stand.The whole setup is taken in a satellite into sapce where there is no gravity. What is the angle between the two strings and the tension in each string?
Here, the angle between the two strings will be 180 degrees, while, the tension will be equal to the coulomb force of repulsion between the two positive charges. it will be
F = T = kq2 / r2 = kq2 / (2l)2
here r = 2l, the distance between the two charges.