12-13,9 | 14 15,0 | 16 -17,0 | 18 19,9 | 20 -21,9 | 22 -23,9 | 24 -25,9 | 26 -27,9 | 28 -29,9 | 30 31,9 | f | ay | fay | Fa2y |
550-569 1 1 +5 +5 25
530-549 2 7 +4 +28 112
510-529 8 2 10 +3 +30 90
490-509 1 1 3 5 +2 +10 20
470-489 4 15 19 +1 +19 19
450-469 20 16 36 0 0 0
430-449 5 5 -1 - 5 5
410-429 2 7 1 10 - 2 - 20 40
390-409 4 4 - 3 - 12 36
370 -389 1 1 1 3 - 4 - 12 48
f 1 10 5 4 43 17 10 8 2 1 100
ax - 4 - 3 -2 -1 0 +1 +2 +3 +4 +5
fax -4 -30 -10 -4 0 +17 +20 +24 +8 +5
fa2x 16 90 20 4 0 17 40 72 32 25
, . fx ; fy ; . fxax fyy : ∑ fxax =+74-48 = +26; ∑fyay = =+9249=43.
fa2 ∑fxax = 316, ∑ fy a2 y = 395. β, (16) S (17).
( 15), β S, ∑faxay, f ; ; . - . f . , . ∑faxay .
/ II III
(-4)1(-4) =+16 (+1)4(-1)=-4 (+5) 1 (+5) = +25
(_4) 1 (-3) = +12 (+2) 1 (-3) = -6 (+4) 5 (+3) = +60
(-3) 4 (-3) = +36 (+4) 2 (-3) = -24 (+3) 2 (+4) = +24
(-2) 2 (-3) = +12 ∑faxay= -34 (+3) 8 (+2) = +48
<-1)5(-2)=+10 (+2) 1 (+1) = +2
∑faxay=+86 (+2)3(+3) = +18
∑faxay =+177 |
IV
(-4)1 (+2) = 8 ∑faxay =177 + 86 3412 =
(-2) 1 (+2) = -- 4 =+263-46 =+217
∑faxay =-12
∑faxay,, β, β,, S, Sy (15).
r = 0,5 , r =0,30,49 , r <0,3 .
, . .
(ra). .
: 1 , (++); 2 , , (+); 3 , , (+ ), 4 , -
(-- --).
|
|
; :
(18)
. , 220 115, -105, 560, 58.
.
(. 9).