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浮力问题涉及阿基米德原理、物体的浮沉条件、浮力产生原因、液体压强的特点、密度、力的平衡和合成等知识,因此成为中考的压轴题.掌握浮力问题的各种解法,以变应变,才能提高解题效率.一、分析法例1用天平测得一实心金属块的质量为21.6克,已知一盛有适量水的烧杯总质量为200克,将金属块用细线浸没在烧杯的水中(金属块不接触烧杯底部和侧壁),用天平测得它们的
Buoyancy problems involve the Archimedes’ principle, the object’s buoyancy conditions, buoyancy causes, the characteristics of liquid pressure, the density, the balance and synthesis of forces, etc. Therefore, it becomes the finale of the senior high school entrance examination. Strain in order to improve the efficiency of problem solving.An analysis of the law 1 measured with a balance of a solid mass of 21.6 grams of metal, known to have a moderate amount of water, the total mass of beaker 200 grams, the metal block with a thin line immersed in Beakers of water (metal blocks do not touch the beaker bottom and side walls), measured with a balance of their