21-23. Show that if the angular momentum of a body is
Chapter , Problem 21-23(choose chapter or problem)
21-23. Show that if the angular momentum of a body is determined with respect to an arbitrary point A. then H4 can be expressed by Eq. 21-9. This requires substituting Pa = Pc, + Po/a Eq. 21-6 and expanding, noting that J fa dm = 0 by definition of the mass center and VG = V* + OJ X . The three positive roots of I, obtained from the solution of this equation, represent the principal moments of inertia /,. 7V, and /..
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