等边角钢截面已知形心为C,对y轴的惯性矩Iy=3175cm4,Imax=5045cm4,(图5-5-11),则Imin等于:()
A.560cm4 B.935cm4 C.1305cm4 D.1870cm4
已知图5-5-10所示矩形截面中Iz1及b,h,要求Iz2。现有四种答案,试判断哪一种是正确的?()
A.A B.B C.C D.D
图5-5-9所示任意截面已知面积为A,形心为C,对z轴的惯性矩为I,则截面对z1轴的惯性矩Iz1为:()