Page 68 - index

ȿɤɿɧɲɿ ɬɚɪɚɭɞɚ ɚɥɵɧԑɚɧ 3- ɠΩɧɟ 4-ɮɨɪɦɭɥɚɥɚɪɞɵ ԕɨɥɞɚɧɵɩ, ɛɚɫ
ɜɟɤɬɨɪɞɵԙ ( Fɛ ) ɦɨɞɭɥɿ ɦɟɧ ɛɚԑɵɬɬɚɭɲɵ ɤɨɫɢɧɭɫɬɚɪɵɧ ɬɚɛɚɦɵɡ, ɹԑɧɢ

¦ ¦ ¦Fɛ ( Fix )2 ( Fiy )2 ( Fiz )2 . (37ɚ)

š Fɛx ,
Fɛ
cos(Fɛ ,i)

š Fɛy , (37ԥ)
Fɛ
cos(Fɛ , j)

š Fɛz .
Fɛ
cos(Fɛ , k)

Ʉɨɨɪɞɢɧɚɬɚɧɵԙ ɛɚɫɬɚɩԕɵ ɧԛɤɬɟɫɿ ɚɪԕɵɥɵ ɚɥɵɧԑɚɧ ɛɚɫ ɦɨɦɟɧɬ, ɨɫɵ
ɧԛɤɬɟɝɟ ԕɚɬɵɫɬɵ ɜɟɤɬɨɪɥɵԕ ɦɨɦɟɧɬɬɟɪɞɿԙ ɝɟɨɦɟɬɪɢɹɥɵԕ ɠɢɵɧɵ ɪɟɬɿɧɞɟ,
ɤɨɨɪɞɢɧɚɬɚ ɨɫɿɧɟ ɩɪɟɤɰɢɹɥɚɧɚɞɵ, ɨɥɚɪ:

>MO (Fi )@x , Ɇ ɛɈ y >MO (Fi )@y , Ɇ ɛɈ z >MO (Fi )@z .
¦ ¦ ¦ɆɛɈ x

ɋɨɧɵɦɟɧ ԕɚɬɚɪ:

>MO (Fi )@x M x (Fi ) , >MO (Fi )@y M y (Fi ) , >M O (Fi )@z M z (Fi )

ɛɨɥԑɚɧɞɵԕɬɚɧ:

M x (Fi ) , Ɇ ɛɈ y
¦ ¦ ¦ɆɛɈ x
M y (Fi ) , Ɇ ɛɈ z M z (Fi ) .

Ȼɚɫ ɦɨɦɟɧɬɬɿԙ ɦɨɞɭɥɿ ɦɟɧ ɨɧɵԙ ɛɚԑɵɬɵ ɤɟɥɟɫɿ ɮɨɪɦɭɥɚɥɚɪɦɟɧ
ɚɧɵԕɬɚɥɚɞɵ:

M ɛO M 2 M 2 M 2 , (38ɚ)
ɛx ɛy ɛz

š M ɛx ,
M ɛO
cos(M ɛO ,i)

š M ɛy , (38ԥ)
M ɛO
cos(M ɛO , j)

š M ɛz .
M ɛO
cos(M ɛO , k)

ɋɨԙԑɵ ɮɨɪɦɭɥɚɞɚԑɵ: Ɇ ɛx , Ɇ ɛy ɠԥɧɟ Ɇ ɛz – ɠԛɣɟ ɤԛɲɬɟɪɿɧɿԙ ɤɨɨɪɞɢɧɚɬɚ

ɨɫɶɬɟɪɿ ɚɪԕɵɥɵ ɚɥɵɧԑɚɧ ɛɚɫ ɦɨɦɟɧɬɬɟɪɿ (Ȼԝɥ ɦɨɦɟɧɬɬɟɪɞɿ ɟɫɟɩɬɟɝɟɧɞɟ 29-
ɮɨɪɦɭɥɚ ɠɢɿ ԕɨɥɞɚɧɵɥɚɞɵ).

§5. Ʉɟɡ ɤɟɥɝɟɧ ɤɟԙɿɫɬɿɤɬɿɤ ɤԛɲɬɟɪ ɠԛɣɟɫɿɧɿԙ ɬɟɩɟ-ɬɟԙɞɿɤ ɲɚɪɬɬɚɪɵ

Ԕɚɬɬɵ ɞɟɧɟɝɟ ԥɫɟɪ ɟɬɭɲɿ ɛɚɫ ɜɟɤɬɨɪ ɦɟɧ ɛɚɫ ɦɨɦɟɧɬ ɧԧɥɝɟ ɬɟԙ ɛɨɥɚɬɵɧ
ɠɚԑɞɚɣɞɵ ԕɚɪɚɫɬɵɪɚɣɵԕ.

¦Fɛ Fi 0, (39)
¦M ɛO MO (Fi ) 0.

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