本题目来源于试卷: Fluid Mechanics，类别为 美国物理杯赛(Physics Bowl)
[单选题]
94.17: A cork has weight mg and density 25% o dddaj7.g yu7225de i bf water 9c tie 3bszb.p s+mn4(density. A string is tied around the cork and attached to the bottom of a water-filled container. As shown in the accompanying figure, the cork is totally immersed in the water. Expressed in terms of the cork weight mg, the tension in the string n.bmci4+tpszbs(93 e is:
A. 0
B. mg
C. 2 mg
D. 3 mg
E. 4 mg
参考答案: D
本题详细解析:
暂无
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