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Unformatted text preview: d 20 ix[J d 2-2 dO 2 . d 2 0 9 dO\ 2 l T dt2, -is d) + J, . (2.2.26) With the restriction to rotation about a fixed axis, only the first term in this exoression affects the dynamics of the body. Thus we write the z component of (2.2.26) as d2O T,= Jd (2.2.27) dt 2 and represent this element in a mechanical circuit as in Fig. 2.2.14. Note that this Inertial reference circuit has exactly the same form as that Fig. 2.2.14 Circuit representation adopted earlier for representing mass in a of a moment of inertia, translational system (see Fig. 2.2.11). * See, for example, I. H. Shames, Engineering Mechanics, Prentice-Hall, Englewood Cliffs, N.J., 1960, pp. 187-188. A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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- Fall '11