Chapter 21, Problem 22P

GO Figure 21-31 shows an arrangement of four charged particles, with angle θ = 30.0° and distance d = 2.00 cm. Particle 2 has charge q₂ = +8.00 × 10⁻¹⁹ C; particles 3 and 4 have charges q₃ = q₄ = −1.60 × 10⁻¹⁵ C. (a) What is distance D between the origin and particle 2 if the net electrostatic force on particle 1 due to the other particles is zero? (b) If particles 3 and 4 were moved closer to the x axis but maintained their symmetry about that axis, would the required value of D be greater than, less than, or the same as in part (a)?

Figure 21-31 Problem 22.