题目内容

一个敞口圆桶，底面半径R=0.1m，高H=0.3m,内盛深h=0.2m 的液体，若使桶和液体以角速度ω旋转，则液体刚开始被抛出圆桶时所需要的ω为（）。

A. 15.02rad/s
B. 19.81rad/s
C. 22.75rad/s
D. 24、26rad/s

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一个敞口圆桶，底面半径R=0.1m，高H=0.3m,内盛深h=0.2m 的液体，若使桶和液体以角速度ω旋转，当液面最低点降至圆桶底面时所需要的ω为（）。

A. 15.02rad/s
B. 19.81rad/s
C. 22.75rad/s
D. 24、26rad/s

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