1原题再现如图1,质量分别为mA和mB的两小球带有同种电荷,电荷量分别为qA和qB,用绝缘细线悬挂在天花板上.平衡时,两小球恰处于同一水平位置,细线与竖直方向间夹角分别为θ1与θ2(θ1>θ2).两小球突然失去各自所带电荷后开始摆动,最大速度分别为vA和vB,最大动能分别为EkA和EkB.则 1 The original title reproduced in Figure 1, the mass was mA and mB two balls with the same charge, charge qA and qB, respectively, with thin suspended wire suspended in the ceiling.While balanced, the two balls are exactly the same Horizontal position, the angle between the thin line and the vertical direction were θ1 and θ2 (θ1> θ2) .Because the two small balls suddenly lose their charges, the maximum swing speed is respectively vA and vB, the maximum kinetic energy is EkA and EkB. Then