Page 26 - index

cosD Fx Fx ,
F Fx2 Fy2 Fz2

cos E Fy Fy , (4)
F Fx2 Fy2 Fz2

cos J Fz Fz .
F Fx2 Fy2 Fz2

2.3. Ɍԛɣɿɫɤɟɧ ɤԛɲɬɟɪɞɿԙ ɬɟԙ ԥɫɟɪ ɟɬɭɲɿ ɤԛɲɿɧ ɤɨɨɪɞɢɧɚɬɚɥɵԕ ɬԥɫɿɥɦɟɧ
ɚɧɵԕɬɚɭ. Ɍԛɣɿɫɤɟɧ ɤԛɲɬɟɪɞɿ ɤɨɨɪɞɢɧɚɬɚɥɵԕ ɬԥɫɿɥɦɟɧ ɚɧɵԕɬɚɭ ɝɟɨɦɟɬɪɢɹɧɵԙ
ɛɟɥɝɿɥɿ ɬɟɨɪɟɦɚɫɵɧɚ ɧɟɝɿɡɞɟɥɝɟɧ. Ɉɥ ɬɟɨɪɟɦɚ: ɜɟɤɬɨɪɥɚɪɞɵΝ ɤɟɡ ɤɟɥɝɟɧ ɨɫɶɤɟ
ɬΟɫɿɪɿɥɝɟɧ ɩɪɨɟɤɰɢɹɥɚɪɵɧɵΝ ɝɟɨɦɟɬɪɢɹɥɵΙ ɠɢɵɧɵ, Ιɨɫɵɥɚɬɵɧ
ɜɟɤɬɨɪɥɚɪɞɵΝ ɚɬɚɥΕɚɧ ɨɫɶɤɟ ɩɪɨɟɤɰɢɹɥɚɪɵɧɵΝ ɚɥɝɟɛɪɚɥɵΙ ɠɢɵɧɵɧɚ ɬɟΝ
ɛɨɥɚɞɵ.

Ɍԛɣɿɫɤɟɧ ɤԛɲɬɟɪ ɠԛɣɟɫɿɧɿԙ ɬɟԙ ԥɫɟɪɥɿ ɤԛɲɿ ɨɥɚɪɞɵԙ ɝɟɨɦɟɬɪɢɹɥɵԕ
ԕɨɫɵɧɞɵɫɵɧɚ ɬɟԙ ɛɨɥɚɬɵɧɞɵԕɬɚɧ, ɬɟԙ ԥɫɟɪɥɿ ɤԛɲɬɿԙ ɤɟɡ ɤɟɥɝɟɧ ɨɫɶɬɟɝɿ
ɩɪɨɟɤɰɢɹɫɵ ԕԝɪɚɭɲɵɥɚɪɞɵԙ ɫɨɥ ɨɫɶɬɟɝɿ ɩɪɨɟɤɰɢɹɥɚɪɵɧɵԙ ɚɥɝɟɛɪɚɥɵԕ
ԕɨɫɵɧɞɵɫɵɧɚ ɬɟԙ ɛɨɥɚɞɵ. ɋɨɧɞɵԕɬɚɧ ɬɟԙ ԥɫɟɪɥɿ ɤԛɲɬɿ ɤɨɨɪɞɢɧɚɬɚɥɵԕ
ɨɫɶɬɟɪɝɟ ɩɪɨɟɤɰɢɹɥɚɩ, ɤɟɥɟɫɿ ɬɟԙɞɿɤɬɟɪɞɿ ɚɥɚɦɵɡ:

¦ ¦ ¦Fx Fix , Fy Fiy , Fz Fiz . (5)

ȿɝɟɪ ɤԛɲɬɟɪ ɦɨɞɭɥɞɟɪɿ ɚɪԕɵɥɵ ɛɟɪɿɥɿɩ ɠԥɧɟ ɨɥɚɪɞɵԙ ɛɚԑɵɬɬɚɪɵ ɛɟɥɝɿɥɿ
ɛɨɥɫɚ, ɨɧɞɚ ɨɥɚɪɞɵԙ ɩɪɨɟɤɰɢɹɥɚɪɵɧ ɨԙɚɣ ɚɧɵԕɬɚɭԑɚ ɛɨɥɚɞɵ. ɋɨɞɚɧ ɤɟɣɿɧ, 5-

ɮɨɪɦɭɥɚɥɚɪɞɵΝ ɤԧɦɟɝɿɦɟɧ ɬɟԙ ԥɫɟɪ ɟɬɭɲɿ ɤԛɲɬɿԙ ԥɪ ɨɫɶɬɟɝɿ ɩɪɨɟɤɰɢɹɥɚɪɵɧ
( Fx , Fy , Fz ) ɚɧɵԕɬɚɭԑɚ ɛɨɥɚɞɵ. Ȼԝɥ ɩɪɨɟɤɰɢɹɥɚɪ ( Fx , Fy , Fz ) ɚɧɵԕɬɚɥԑɚɧɧɚɧ

ɤɟɣɿɧ ɬɟԙ ԥɫɟɪ ɟɬɭɲɿ ɤԛɲɬɿԙ ɦɨɞɭɥɿɧ ɠԥɧɟ ɛɚԑɵɬɬɚɭɲɵ ɤɨɫɢɧɭɫɬɚɪɵɧ
ɚɧɵԕɬɚɭԑɚ ɛɨɥɚɞɵ. əԑɧɢ

¦ ¦ ¦F ( Fix )2 ( Fiy )2 ( Fiz )2 , (6)

cosD Fx , cos E Fy , cos J Fz . (6-ɚ)
F F F

ȿɝɟɪ ɬԛɣɿɫɤɟɧ ɤԛɲɬɟɪ ɬɟɤ ɛɿɪ ɠɚɡɵԕɬɵԕɬɚ ɠɚɬɫɚ, ɨɧɞɚ ɨɧɵ Oxy

ɠɚɡɵԕɬɵԑɵ ɞɟɩ ԕɚɛɵɥɞɚɩ, ɬɟԙ ԥɫɟɪ ɟɬɭɲɿ ɤԛɲɬɿԙ ɦɨɞɭɥɿɧ ɠԥɧɟ ɛɚԑɵɬɬɚɭɲɵ
ɤɨɫɢɧɭɫɬɚɪɵɧ

¦ ¦F ( Fix )2 ( Fiy )2 , (7)

cosD Fx , cos E sin D Fy . (7-ɚ)
F F

ɮɨɪɦɭɥɚɥɚɪɵ ɚɪԕɵɥɵ ɚɧɵԕɬɚɣɦɵɡ

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