比较浮力大小的方法

• 作 者: 胡沛涛
• 出 处: 初中生必读
• 发表日期: 2004年期
• 关键词: 阿基米德原理 漂浮条件 铝球 析因 中都 综合分析 在三

一、根据阿基米德原理公式F_浮=ρ_液gV_排ρ_液和V_排相同或其中之一相同时,用此法较为方便.例1将体积相同、形状不同的铝块和铁块浸没在水中,哪种物体受到的浮力大?解析因为铝块和铁块的体积相等,且都浸在水中,ρ_液和V_排都相等,根据公式F_浮=ρ_液gV_排可知,铝块和铁块受到的浮力相等.

First, according to the principle of Archimedes F_Floating = ρ_ liquid gV_ row ρ_ liquid and V_ row is the same or one of the same, this method is more convenient. Example 1 the same volume, the shape of different aluminum Block and iron immersed in the water, what kind of objects by the buoyancy large? Analysis Because the volume of aluminum blocks and iron are equal, and are immersed in water, ρ_ liquid and V_ row are equal, according to the formula F_Floating = ρ _ Liquid gV_ row we can see that the aluminum buoyancy and buoyancy are equal.