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【简答题】
质量m,长l的细杆,可绕过端点O的水平光滑固定轴在竖直平面上自由摆动将细杆从图所示的水平位置静止地释放,当摆角为 时,试求: (1)细杆旋转角速度 和角加速度 ; (2)转轴提供的沿杆长方向支持力 和垂直于杆长方向的支持力
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皮皮学刷刷变学霸
举一反三
【单选题】滑块捞矛由（）组成。
A.
上接头、矛杆、滑块、锁块及螺钉
B.
上接头、筒体、滑块、锁块及螺钉
C.
上接头、矛杆、圆卡瓦、释放环
D.
上接头、矛杆、螺旋卡瓦、锁块及螺钉
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