... män: Cå Såí K Thût Thu Låüi - Phêa hả lỉu : ⎪⎩⎪⎨⎧×=ω==ω××γ =22 16 022 122 2,,,hhPCC KN15,1 42. 2,1 .22 ,1.9810P2== Âiãøm âàût: m,,,,,h.IhhCCCD806 022 1 122 126 0 322 222 =×××+=ω+= Håüp lỉûc ca hai ... ()b.hhh2hh.b..W.P2 122 21ZZ−−+γ=Ωγ=γ= ()KN6,41N3,41 620 1. 823 .98101. 123 .22 1.981 022 ≈==−−+= Âiãøm âàût: Cạch âạy låïn: m25,1 121 .22 .8.31bBb.2B.h.31l =++=++= - Tênh håüp lỉûc KN 12, 446,417,14PPP 222 z2x=+=+= ... lỉûc: - Phêa thỉåüng lỉu : P1 = γ.Ω1.b 2l.h211=Ω → KN3,88N8 829 02. 23.9810P21≈== Âiãøm âàût: Âi qua trng tám ca biãøu âäư: cạch âènh m23.32h 321 == - Phêa hả lỉu : N1415 02. 22, 19810b2h.9810b..P 222 22= ==Ωγ=...