... Formulation of the problem ­ angle about the mass center C IC = mR 2 ­ central moment of inertia m and R ­ mass and radius of the hula-hoop k ­ coefficient of viscous friction r ­ radius of the waist FT ­ friction force N ­ reaction force ­ angle between x and CO x = a sin t , IC m m Ё +k (R - (R - y = b cos t = -FT R r ) = m (x sin + y cos ) + FT Ё Ё Ё r ) 2 = m (x cos - y sin ) + N Ё Ё (R - r ) = R ­ non-slippage where constants 0 mod 2 are defined from + µ cos 0 = 0. ...

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Introduction to PLASMA ASTROPHYSICS (Selected 10 lectures) Boris V. Somov Astronomical Institute and Faculty of Physics Moscow State University Pushino-na-Oke, 2008 Contents Ab out These Lectures 1 Particles and Fields: Exact Self-Consistent Description 1.1 Liouville's theorem . . . . . . . . . . . . . . . . . . . 1.1.1 Continuity in phase space . . . . . . . . . 1.1.2 The character of particle interactions 1.1.3 The Lorentz force, gravity . . . . . . . . . 1.1.4 Collisional friction . . . . . . . . . . . .

324. Department

325. Higher School of Policy in Culture and Administration in Humanities (faculty