根据牛顿第三定律：作用力与反作用力,压力F=重力G=450牛
即F=G=450(N)
压强P=F/S=450/0.0175=25714.29
晓明体重450牛,他每只脚与地面的接触面积为1.75乘10的负二次方㎡,求晓明站立时队水平地面的压力和压强.
晓明体重450牛,他每只脚与地面的接触面积为1.75乘10的负二次方㎡,求晓明站立时队水平地面的压力和压强.
物理人气：460 ℃时间：2019-09-20 13:01:07
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