Chapter 5, Problem 124AP

The charge unit length on the thin shown below is $\lambda$ .What is the force on the point charge q? Solve this problem by first considering the electric force d $\stackrel{\to }{F}$ on q due to a small segment dx of the rod, which contains charge $\lambda dx$ . Then, find the net force by integrating d $\stackrel{\to }{F}$ over the length of the rod.