8 ANNUAL KEPOBT NATIONAL ADVISORY COMMITTEE FOE AERONAUTICS. In Figure I the curves t => constant have been drawn for two different values of w. It will be seen that when w*=M the time of damping t is generally greater than the period. This is sometimes the case even when w = .6, but by choosing x… … nus effect or its inverse1 and from related Fl<3. I. phenomena.* The cubic equation may now be written in the form where ,(iJ ^+M±m.^(E0Ka+J.F.+Ja^f)x + W. r=Ae1±WJc1 9 ' """ ' ' WV . /= Efc + + J0ft + FJ,+— W WV B-A To study the effect of rotation upon the oscillations let o^ — i/3, be the roots…
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