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116问答网 > 在德国马德堡市的广场上，1654年曾经做过一个著名的马德堡半球实验．把两个直径约为20cm的铜制空心半球和

在德国马德堡市的广场上，1654年曾经做过一个著名的马德堡半球实验．把两个直径约为20cm的铜制空心半球和

2025-03-16 07:27:40

推荐回答（1个）

回答1：

根据p=

F

S

可得，大气压产生的压力：
F=pS=pπ（

d

2

）²=10⁵Pa×3.14×（

20×10?2m

2

）²=3140N，
需要马匹的对数：
n=

3140N

1.6×103N

=1.9625对，即2对，
所以要想能把两个球拉开至少需要4匹马．
答：要用4匹马才能把两个球拉开．

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