Statement

7.4.18. In a conical well of depth H and with an angle at the apex α at h0 below the plane of the base of the well,
there are two small charged bodies connected by a thread. The thread is burned through, and the bodies
first slide up the wall of the hole, and then fly out of it. Coefficient of friction of bodies against the wall
of the well µ, mass and charge of each body m and q. To what height will the bodies that fly out of the
hole rise?