Page 518 - index
P. 518
ȿɧɞɿ z2 ԕɚɲɵԕɬɚ ɠԛɪɝɿɡɿɥɝɟɧ ԕɢɦɚɧɵԙ ɰɟɧɬɪɿ ɚɪԕɵɥɵ ɚɣɧɚɥɚɬɵɧ
ɤԛɲɬɟɪɞɿԙ ɦɨɦɟɧɬɬɟɪɿɧ ɬɚɛɚɣɵԕ:
¦ M z2 0 RA z2 Ɋ(z2 3) M 2 0 .
Ȼԝɞɚɧ, M 2 RA z2 Ɋ(z2 3) ɬɟԙɞɟɭiɧ ɚɥɚɦɵɡ. Ȼԝɥ ɬɟԙɞɟɭɞɟɝi z2
ɛɿɪiɧɲi ɞԥɪɟɠɟɥi ɛɨɥԑɚɧɞɵԕɬɚɧ, ɦԝɧɵԙ ɷɩɸɪɚɫɵ ɞɚ (ɝɪɚɮɢɝɿ) ɤԧɥɛɟɭ ɬԛɡɭ
ɫɵɡɵԕɩɟɧ ɲɟɤɬɟɥɟɞɿ. Ɇԝɧɞɚɣ ɷɩɸɪɚɧɵ ɬԝɪԑɵɡɭ ԛɲɿɧ, ɤɟɦ ɞɟɝɟɧɞɟ,
ɦɨɦɟɧɬɬɿԙ ɟɤɿ ɦԥɧɿɧ ɬɚɛɭ ɤɟɪɟɤ.
1) z1 3ɦ ɛɨɥԑɚɧɞɚ, Ɇ1=1,2 ɬɦ;
2) z2 6ɦ ɛɨɥԑɚɧɞɚ, Ɇ2 = - 4,8 ɬɦ.
Ԕɚɪɚɫɬɵɪɵɥɵɩ ɨɬɵɪԑɚɧ ɚɥɚɩɬɵԙ ɷɸɪɚɫɵ 79-ɫɭɪɟɬɬɟ ɤԧɪɫɟɬɿɥɝɟɧ.
Ԛɲɿɧɿɲɿ ɚɥɚɩɬɚԑɵ ɷɩɸɪɚɧɵ ɬԝɪԑɵɡɚɪɞɚ, ɚɪԕɚɥɵԕɬɵԙ ɫɨɥ ɛԧɥɿɝɿɧ ɚɥɵɩ
ɬɚɫɬɚɩ, ɨԙ ɠɚԑɵɧ ԕɚɪɚɫɬɵɪɚɦɵɡ. ɋɨɧɵɦɟɧ, ԛɲɿɧɲi ɚɥɚɩɬɚɧ ԕɢɦɚ ɠԛɪɝɿɡɟɦɿɡ.
Ɉɥ ԕɢɦɚ ɫɨɥ ɠɚԕɬɚԑɵ ɠɵɥɠɵɦɚɣɬɵɧ ɬɿɪɟɤɬɟɧ Z3 ԕɚɲɵԕɬɵԕɬɚ ɠԛɪɝɿɡɿɥɟɞi
(82-ɫɭɪɟɬ).
82-ɫɭɪɟɬ
Ʉԛɲɬɟɪɞɿ ɬɿɤ ɨɫɶɤɟ ɩɪɨɟɤɰɢɹɥɚɩ, ɤԧɥɞɟɧɟԙ ɤԛɲɬɿԙ ɬɟԙɞɟɭɿɧ ɚɥɚɦɵɡ.
¦ y 0 Q3 Ɋ 0 Q3 Ɋ 2,4ɬ .
Ⱦɟɦɟɤ, ɛԝɥ ɚɥɚɩɬɚ Q3 ɲɚɦɚɫɵ ɬԝɪɚԕɬɵ, ɬɚԙɛɚɫɵ ɩɥɸɫ. ɋɨɧɞɵԕɬɚɧ ɛԝɥ
ɚɥɚɩɬɵԙ ɷɩɸɪɚɫɵ ɚɪԕɚɥɵԕɬɵԙ ɨɫɿɧɟ ɩɚɪɚɥɥɟɥɶ ɬԛɡɭ ɫɵɡɵԕɩɟɧ ɲɟɤɬɟɥiɩ,
ɨɫɶɬɿԙ ɠɨԑɚɪԑɵ ɠɚԑɵɧɞɚ ɠɚɬɚɞɵ. Ȼԝɪɵɧԑɵ ɦɚɫɲɬɚɛɩɟɧ ɛԝɥ ɷɩɸɪɚɧɵ ɞɚ
ɬԝɪԑɵɡɚɦɵɡ.
ȿɧɞɿ z3 ԕɚɲɵԕɬɚ ɠԛɪɝɿɡɿɥɝɟɧ ԕɢɦɚɧɵԙ ɰɟɧɬɪɿ ɚɪԕɵɥɵ ɚɣɧɚɥɚɬɵɧ
ɤԛɲɬɟɪɞɿԙ ɦɨɦɟɧɬɬɟɪɿɧ ɬɚɛɚɣɵԕ:
¦M z2 0 RB z2 M 2 0 .
Ȼԝɞɚɧ, M 3 Ɋ (8 z3 ) ɬɟԙɞɟɭiɧ ɚɥɚɦɵɡ. Ȼԝɥ ɬɟԙɞɟɭɞɟɝi z2 ɛɿɪiɧɲi
ɞԥɪɟɠɟɥi ɛɨɥԑɚɧɞɵԕɬɚɧ, ɨɧɵԙ ɷɩɸɪɚɫɵ (ɝɪɚɮɢɝɿ) ɤԧɥɛɟɭ ɬԛɡɭ ɫɵɡɵԕɩɟɧ
ɲɟɤɬɟɥɟɞɿ. Ɇԝɧɞɚɣ ɷɩɸɪɚɧɵ ɬԝɪԑɵɡɭ ԛɲɿɧ, ɤɟɦ ɞɟɝɟɧɞɟ, ɦɨɦɟɧɬɬɿԙ ɟɤɿ ɦԥɧɿɧ
ɬɚɛɭ ɤɟɪɟɤ.
1) z3 6ɦ ɛɨɥԑɚɧɞɚ, Ɇ3 = -4,8 ɬɦ;
2) z2 8ɦ ɛɨɥԑɚɧɞɚ, Ɇ1=0.
Ȼԝɪɵɧԑɵ ɦɚɫɲɬɚɛɩɟɧ ɛԝɥ ɷɩɸɪɚɧɵ ɞɚ ɬԝɪԑɵɡɚɦɵɡ. Ԕɚɪɚɫɬɵɪɵɥɵɩ
ɨɬɵɪԑɚɧ ɚɪԕɚɥɵԕɬɵԙ ɬɨɥɵԕ ɷɩɸɪɚɥɚɪɵ 79-ɫɭɪɟɬɬɟ ɤԧɪɫɟɬɿɥɝɟɧ.
2-ɦɵɫɚɥ. Ɍɚɪɚɥԑɚɧ ɤԛɲ ɠԥɧɟ ɦɨɦɟɧɬɩɟɧ ɠԛɤɬɟɥɝɟɧ ɚɪԕɚɥɵԕɬɵ ɚɥɵɩ
ԕɚɪɚɣɵԕ (83 ɚ-ɫɭɪɟɬ).
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