反抗压强是什么意思?

2025-03-15 03:59:04
推荐回答(1个)
回答1:

固体中
P=F/S
压力是力,有方向 矢量
定义:力是物体之间的相互作用.大小、方向、作用点是力的三要素.
and
压强实质上是压力大小的效果
书本概念:物体所受的压力与受力面积之比叫做压强,压强用来比较压力产生的效果,压强越大,压力的作用效果越明显
压强是受力物体单位面积上压力大小的表示
所以对受力物体来说, 压强是由施力物体到受力物体的,并且仅仅存在于受力的接触面上, 与其他无关
结论:压力有方向,压强没有方向。
你就理解成压殇是压力的老婆,压力去哪儿,压强也去哪

液体中
P=pgh,液体内任意一点的压强朝各个方向都相等,某一点的压强只和p,g,h有关,,这三个因素有关,和其他无关,也没用方向性,所以各个方向的压强是相等的

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