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47
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∑ Kr = 0 . Fhf_glhlp_gljh[_`guokbebg_jpbb M r = (mrr + mrd )ar& 2 + ms1r& 2l3 + ms r& 2l 2 , ]^_ a – jZkklhygb_ f_`^m hkyfb pbebg^jh\ l2 , l3 – jZkklhygb_ f_`^m kj_^gbfbbdjZcgbfbs_dZfbdhe_gqZlh]h\ZeZ Wlhlfhf_glg_[m^mqbmjZ\gh\_r_ggufi_j_^Z_lkygZhihju^\b]Z l_ey\uau\Zy\b[jZpbxgZjZf_ljZdlhjZihwlhfm_]hmjZ\gh\_rb\Zxl Kbeu bg_jpbb i_j\h]h ihjy^dZ hl \ha\jZlgh-ihklmiZl_evgh ^\b`m- sbokyfZkk j1 = m j r& kRV. , P1p 2 Pj21p = m j r& 2 kRV(180 + .) = − m j r& 2 cos. , ]^_ m j = mi + mri - fZkkZ \ha\jZlgh-ihklmiZl_evgh ^\b`msboky ^_lZe_c fZkkZihjrg_\h]hdhfie_dlZbfZkkZrZlmgZhlg_k_ggZydhkbihjrg_\h ]hdhevpZ . -m]heih\hjhlZdjb\hrbiZi_j\h]hpbebg^jZ KmffZwlbokbe ∑ P j1 = 0 l_kbeui_j\h]hihjy^dZmjZ\gh\_r_gu Fhf_glhlwlbokbe M j1 = Pj1a = m j r& 2 akRV. g_mjZ\gh\_r_g,b_]hfZdkbfZevgZy\_ebqbgZkhklZ\ey_l M j1 max = m j r& 2 a . >Zggucfhf_glg_[m^mqbmjZ\gh\_r_ggufi_j_^Z_lkygZhihju ^\b]Zl_eyihwlhfm_]hmjZ\gh\_rb\Zxl Kbeubg_jpbbhl\ha\jZlgh-ihklmiZl_evgh^\b`msbokyfZkk\lhjh]h ihjy^dZ j 2 = m j r& kRV. , P1p 2 2 = m j r& cos2(180 + .) = m j r& kRV. , Pj2p 2 2 ]^_ -hlghr_gb_jZ^bmkZdjb\hrbiZd^ebg_rZlmgZ KmffZwlbokbe ∑ P j 2 = 2m j r& kRV. . 2 FZdkbfZevgh_agZq_gb_ 47
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