题目内容

根长度为L=0.6m的均匀棒,绕其端点O转动时的转动惯量为J=0.12kgm2。当棒摆到竖直位置时,其角速度为ω0=2.4rad/s。此时棒的下端和一质量为m=0.2kg的泥球相碰并粘在一起,问棒粘有泥球后的角速度ω为。

A. 1.0rad/s
B. 1.5rad/s
C. 1.8rad/s
D. 2.0rad/s

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