要正确地定性比较物体在不同条件下所受浮力的大小,笔者认为应是:全面分析,掌握异同;运用策略,灵活切入. 具体步骤如下: 一、确定物体静止时的状态,这是定性比较的前提.物体在液体中静止时最终状态只有三种:漂浮,悬浮或沉入底部.一般情况下,我们可 To qualitatively and qualitatively compare the size of the buoyancy encountered by the object under different conditions, I think it should be: a comprehensive analysis of the similarities and differences; the use of tactics, flexible cut-in. Specific steps are as follows: First, to determine the state when the object is stationary, which is qualitative comparison The premise of objects in the liquid when the final state of rest only three: floating, floating or sinking into the bottom of the general situation, we can