题目内容
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A homogeneous bar has mass m and length [图]. At t...
A homogeneous bar has mass m and length. At the position shown, the angular velocity of the bar is. The velocities of points,andare,and,respectively. Pointis the instantaneous center for velocities of the bar. The kinetic energy of the bar at this instant should be
A、
B、
C、
D、
提问人:网友sangye
发布时间:2022-01-07