If the section figure has a symmetry axis, then for the figure ( ) to its symmetry axis.
A: Both the static moment of inertia and the moment of inertia are not zero;
B: Both the static moment of inertia and the moment of inertia are zero;
C: The static moment of inertia is not zero, the moment of inertia is zero;
D: The static moment of inertia is zero, the moment of inertia is not zero.
A: Both the static moment of inertia and the moment of inertia are not zero;
B: Both the static moment of inertia and the moment of inertia are zero;
C: The static moment of inertia is not zero, the moment of inertia is zero;
D: The static moment of inertia is zero, the moment of inertia is not zero.
举一反三
- The moment of inertia(惯性力矩) of a body(物体) depends on the location of the axis about which the moment of inertia is computed.
- At bottom dead center, the centerline of the connecting rod usually coincides with the（） A: angularity of the piston motion B: inertia moment from the piston C: centerline of the cylinder D: centerline of the king pi
- The section where the bending moment diagram has abrupt change is: () A: Section with concentrated load B: Section with zero shear force C: Section with zero load D: Section with concentrated couple
- The three hinged arch designed according to the rational arch axis can make the bending moment of each section in the arch zero under any load. A: 正确 B: 错误
- The area of section is A, the centroid is C and the moment of inertia of section with respect to the z axis is[img=14x22]1803a25ae5167bc.png[/img] , then [img=21x22]1803a25aee78117.png[/img] is .[img=185x110]1803a25af82e370.jpg[/img] A: [img=55x26]1803a25b03408a9.jpg[/img] B: [img=99x21]1803a25b0d903ef.jpg[/img] C: [img=71x53]1803a25b1883f79.jpg[/img] D: [img=85x56]1803a25b22f93d9.jpg[/img]