题目:某溶液的密度随深度 h(以厘米为单位)而变化,其变化规律为:ρ=ρ_0+kh,式中ρ_0=1克/厘米~3,k=0.01克/厘米~4.现向该溶液中放入两只用一根10厘米长的细线连在一起的小球 A 和 B,每只球的体积均为 V=1厘米~3,其质量分别为 m_A=1.2克和 m_B=1.4克.若两球在溶液中都处于悬浮状态,并且线是拉紧的(g 取10牛/千克).求:(1)此时小球 A 所处的深度 h_A.(2)此时细线对小球 A 的拉力 T. Title: The density of a solution varies with the depth h (in centimeters) and its variation is: ρ = ρ_0 + kh, where ρ_0 = 1 g/cm -3, k = 0.01 g/cm -4. Two balls A and B joined together with a 10 cm long thin wire were placed into the solution. Each ball had a volume of V=1 cm~3, and its mass was m_A=1.2 g and m_B = 1.4g. If the two balls are in suspension in the solution and the thread is tensioned (g is 10 N/kg), find: (1) the depth of ball A at this time h_A. (2) The tension of the thin line on the ball A at this time