A ball of mass m hangs from a thread. A horizontal electric force F acts on the ball, such that the thread makes an angle theta to the vertical.
1. Discover a general expression for the electric force F on the ball in terms of , m, and the gravitational acceleration g. (please be descriptive with this question.
2. Compute F for = 34, m = 1:0 g, and g = 9:8m=s2.
3. Compute F for = 89:9, m = 1:0 g, and g = 9:8m=s2.
Sanity checks: Is answer to part c of the same order of magnitude as the force due to gravity? Should it be? What about part d?