我们知道,计算压强的公式有两个:一个是压强的定义式p=F/S,使用这个公式往往是在已知压力F或固体物置于水平面上F=G的情况下计算压强.而如果要求液体内部或液体对容器底的压力和压强时,往往先用公式p=pgh算出压强,再用F=pS求出压力.事实上,在许多压强类题目中,使用这两个公式有很大的灵活性. We know that there are two formulas for calculating pressure: one is the definition of pressure p = F/S, and this formula is often used to calculate the pressure with a known pressure F or a solid object placed on the horizontal plane F = G. When pressure or pressure in the liquid or liquid on the bottom of the vessel is required, the pressure is usually calculated using the formula p=pgh, and the pressure is determined by F=pS. In fact, in many pressure problems, the use of these two formulas is very high. Great flexibility.