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压强是初中物理学习阶段的重点和难点,常见的压强问题以固体和液体产生的压强为主.笔者在教学中总结出一些规律,供参考.一般规律:1.固体产生的压力、压强问题,先求压力F,再用p=F/S求压强.
Pressure is the key and difficult point in the physics learning stage of junior high school. Common pressure problems are mainly caused by pressure generated by solids and liquids. The author summarizes some rules in teaching for reference. General rules: 1. The pressure and pressure generated by solids, First seek pressure F, then use p = F / S pressure.