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15 km. Its mas- nal axis of rotat

15 km. Its mas- nal axis of rotat

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The earth is a uniform rigid ellipsoid of revolution. Its polar radius is a = 6356.76 km. Its equatorial radius is b= 6378.15 km. Its mass is 5.976 ×104 kg. Let its nominal axis of rotation be ê,. m(a² +b*) Its principal moments of inertia are I, = I, = %3D 2mb? and 13 Calculate the angular velocity of precession of the North Pole on the surface of the earth, in radians per year. Calculate the period of this precession.
Transcribed Image Text:The earth is a uniform rigid ellipsoid of revolution. Its polar radius is a = 6356.76 km. Its equatorial radius is b= 6378.15 km. Its mass is 5.976 ×104 kg. Let its nominal axis of rotation be ê,. m(a² +b*) Its principal moments of inertia are I, = I, = %3D 2mb? and 13 Calculate the angular velocity of precession of the North Pole on the surface of the earth, in radians per year. Calculate the period of this precession.
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