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众所周知,力的作用效果与力的三要素有关.力的大小、力的方向和力的作用点不同,力的效果就可能不同.研究压力作用的效果时,发现作用效果与压力大小有关,还与受力面积大小有关.为了表示压力作用效果的明显程度,物理学上引入了压强的概念.用压强表示压力作用的效果,压强越大,压力作用效果就明显,,压强越小,压力作用效果就越不明显.而实际上,
As we all know, the effect of force is related to the three elements of force: the size of force, the direction of force and the point of force are different, and the effect of force may be different.When we study the effect of stress, we find that the effect is related to the pressure, And stress the size of the area.In order to show the extent of the obvious effect of pressure, physics introduced the concept of pressure.Use pressure to show the effect of pressure, the greater the pressure, the pressure effect is obvious ,, the pressure is smaller, the pressure effect The less obvious the effect.And in fact,