给定图5-21所示正方形，则图形对形心轴y和y1的惯性矩Iy1与Iy之间的关系为 ( )。A. Iy1>IyB. Iy1 = IyC. Iy1...

作者: rantiku 人气: - 评论: 0

问题给定图5-21所示正方形，则图形对形心轴y和y1的惯性矩Iy1与Iy之间的关系为 ( )。

选项 A. Iy1>Iy B. Iy1 = Iy C. Iy1=0.5Iy D. Iy1y

答案 B

解析提示：过正多边形形心的任何一个坐标轴的惯性矩都是一个常量。

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