Question:
Two identical balls, each having a charge of $2.00 \times 10^{-7} \mathrm{C}$ and a mass of $100 \mathrm{~g}$, are suspend from a common point by two insukating strings eacg $50 \mathrm{~cm}$ long. The balls are held at a separation $5.0 \mathrm{~cm}$ apart and then released. Find
(a) the electric force on one of the charged balls
(b) the components of the result force on it along and perpendicular to the string
(c) the tension in the string
(d) The acceleration of the balls.
Answers are to be obtained only for the instant just after the release.
Solution:
