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>> 11 . |
8.
60. ., . . . . , ( ) t, t + Δt, . M1, 2, 3 . . . , , (. 8.4). : , . . .
: , , , , , . . , . , . , ( ) . 8.5 MN ; 1 1 . , 1 .
α . , , . . , ,
, , r = AD = υΔt = . , , 8.5. DB, . . 2 2 DB. . AD = ADB , ∠DBA = ∠CAB. α = ∠CAB γ = ∠DBA . , 1: α = γ. (8.1) 1 ( ) . : , , . , . . . . .
1. ? 2. ?
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