A small sphere 1 carrying charge q1 and having inertia m1 is constrained to moving inside a narrow vertical tube (Figure 1). Fixed at the bottom of the tube is a small sphere 2 carrying charge q2 . Figure 1 of 1 Sphere 2 with charge q 2 is fixed at the bottom of a vertical tube. Sphere 1 is in the tube at distance h above sphere 2. The mass and charge of sphere 1 are m 1 and q 1, respectively. The diameter of each sphere is close to the diameter of the tube. Part A Determine the equilibrium height h for sphere 1 (ignore friction)