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ɋɨɧɞɚ:

0 S x1 c ˜ Ⱥ, 0 S y1 a ˜ Ⱥ .

Ȼԝɥ ɠɟɪɞɟɝi ɫ ɠԥɧɟ ɚ ɤɟɡ ɤɟɥɝɟɧ ɨɫɶɬɟɪɞɟɧ (ɯ1ɭ1) ɨɪɬɚɥɵԕ ɨɫɶɬɟɪɝɟ ɞɟɣiɧɝi
ɚɪɚԕɚɲɵԕɬɵԕ. əԑɧɢ

c y ɨɪɬ S x1 , a xɨɪɬ S y1 . (5.6)
Ⱥ Ⱥ
Ɉɪɬɚɥɵԕ ɨɫɶɬɟɪɞiԙ ԧɡɚɪɚ ԕɢɵɥɵɫɭ ɧԛɤɬɟɫi ԕɢɦɚɧɵԙ ɫɚɥɦɚԕ ɰɟɧɬɪi ɛɨɥɵɩ
ɬɚɛɵɥɚɞɵ.
Ɇɚɬɟɪɢɚɥɞɚɪ ɤɟɞɟɪɝiɫiɧiԙ ɤԧɩɬɟɝɟɧ ɟɫɟɩɬɟɪiɧɞɟ, ԕɢɦɚɧɵԙ ɫɚɥɦɚԕ ɰɟɧɬɪiɧ
ɛiɥɭ ԧɬɟ ԕɚɠɟɬ. ɋɨɧɞɵԕɬɚɧ ԕɢɦɚɧɵԙ ɫɚɥɦɚԕ ɰɟɧɬɪiɧ ɬɚɛɭԑɚ ɟɫɟɩɬɟɪ
ԕɚɪɚɫɬɵɪɚɣɵԕ.
1) Ԧɬɤɟɧ ɩɚɪɚɝɪɚɮɬɚ ɟɫɟɩɬɟɥɝɟɧ, ɛɢiɤɬiɝi ԣ ɬɚɛɚɧɵ - ɜ ԛɲɛԝɪɵɲɬɵԙ
ɫɚɥɦɚԕ ɰɟɧɬɪiɧiԙ, ɨɧɵԙ ɬɚɛɚɧɵɧɚɧ ԕɚɧɲɚ ɠɟɪɞɟ ɨɪɧɚɥɚɫԕɚɧɵɧ ɬɚɛɚɣɵԕ. Ɉɥ
ԛɲiɧ ɤɟɡ ɤɟɥɝɟɧ ɯ1 ɨciɧ ɠԛɪɝiɡɟɦiɡ. Ȼԝɪɵɧԑɵ ɟɫɟɩɬiԙ ɧԥɬɢɠɟɫiɧ ɩɚɣɞɚɥɚɧɭ
ɦɚԕɫɚɬɵɦɟɧ, ɛԝɥ ɨɫɶɬi ԛɲɛԝɪɵɲɬɵԙ ɬɚɛɚɧɵ ɚɪԕɵɥɵ ɠԛɪɝiɡɟɦiɡ (62-ɫɭɪɟɬ).
Ȼԝɥ ɨɫɶɬɟɝi ɫɬɚɬɢɤɚɥɵԕ ɦɨɦɟɧɬ:

S x1 b ˜ h2 .
6

Ɉɫɵ ɩɚɪɚɝɪɚɮɬɚԑɵ ɟɤiɧɲi ɮɨɪɦɭɥɚɧɵ ԕɨɥɞɚɧɚɦɵɡ, ɹԑɧɢ

bh 2

yɨɪɬ S x1 1 6 h.
Ⱥ 2 3
b ˜ h

ɋɨɧɵɦɟɧ, ԛɲɛԝɪɵɲɬɵԙ ɫɚɥɦɚԕ ɰɟɧɬɪi, ɬɚɛɚɧɵɧɚɧ h ɲɚɦɚɫɵɧɞɚԑɵ
3

ԕɚɲɵԕɬɵԕɬɚ ɠɚɬɚɞɵ (62-ɫɭɪɟɬ).
2) Ʉɟɥɟɫi 63-ɫɭɪɟɬɬɟ ɤԧɪɫɟɬiɥɝɟɧ, ɠɚɪɬɵ ɞԧԙɝɟɥɟɤɬiԙ ɫɚɥɦɚԕ ɰɟɧɬɪiɧ ɬɚɛɭ
ɤɟɪɟɤ ɛɨɥɫɵɧ.

62-ɫɭɪɟɬ 63-ɫɭɪɟɬ

Ԕɢɦɚɧɵԙ ɛiɪ ɫɢɦɦɟɬɪɢɹ ɨɫi ɛɚɪ, ɨɥ ɨɫɶ – ɭ. Ⱦɟɦɟɤ, ɫɚɥɦɚԕ ɰɟɧɬɪi ɨɫɵ
ɨɫɶɬiԙ ɛɨɣɵɧɞɚ ɠɚɬɚɞɵ. Ȼiɡɞiԙ ɦɚԕɫɚɬɵɦɵɡ – ɛԝɥ ԕɢɦɚɧɵԙ ɫɚɥɦɚԕ ɰɟɧɬɪi ɯ
ɨɫiɧɟɧ ԕɚɧɞɚɣ ԕɚɲɵԕɬɵԕɬɚ ɠɚɬɚɬɵɧɵɧ ɬɚɛɭ.

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