初二物理关于浮力计算的方法有多种 ,除了用阿基米德原理F浮 =ρ液 gV排和浮力产生的原因F浮 =F向上 -F向下以外 ,还可以用称量法F浮 =G空 -G液和物体浮沉条件法F浮 =G(物体漂浮或悬浮 )及二力平衡条件法F浮 =G。对于初学者往往很难把题目分析透彻 ,很难找到适当的方法尽快解题 ,现就几种情况分别举例分析 There are many methods for buoyancy calculation in the second day physics, except for the Archimedean principle F floating = liquefaction gV row and buoyancy causes F float = F up - F down, but also by weighing F float = G Air-G liquid and object floatation condition method F float = G (object float or float) and two-force balance condition method F float = G. For beginners, it is often difficult to analyze topics thoroughly. It is difficult to find appropriate methods to solve problems as quickly as possible.