Because of its oblate shape, the moment of inertia of the earth is a maximum about the polar axis and minimum about an axis in the equatorial plane.
由于地球是扁球体,绕极轴惯量矩最大,而绕在赤道面内的轴的惯量矩最。
3
Polarmoment of inertia can be increased by adding weight at 3 and 9 o 'clock, using the largest comfortable grip size and replacing worn grips regularly.