. OO 1 (. 7), () m. m 1 m 2, . 2, , . H1, m, . . . : m1=m2=(0.4310.001); P=mg=(1.5060.005) H; l=(0.5100.005); m=(0.111 0.001) ; r=(10-2 510-5) .
. , M, I i M I · i.
1.
m H1, . , :
, (1)
a , m , , , 1; r 1.
a
, (2)
H1 , m ; t . :
, (3)
(3) (1), :
, (4)
2.
m 1 m 2 :
. (5)
1 2, , .
3. ,
m (. . 8) . a, :
1 . . , , , :
, a .
. H1, , , H2. mg (H1 - H2) 1:
,
(6)
M, I i, M I · i.
H1 m 1 m 2 (R 1 = 20 R 2 = 10 ).
|
|
1. m 1 m 2 , 20 . . (H1) m.
2. m 0 .
3. , .
4. t, , .
5. , m . H1, H2, m.
6. R 1 = 20 R 1 = 10 . H1, t H2 1. .
7. i, I M R 1 = 20 R 1 = 10 (4), (5), (6) , 1. 2. .
8. M (I · i) :
,
;
,
,
ΔI = 0,001 ∙2; ΔH1=ΔH2=510-3 ; ΔP=510-3 ; Δr=510-5 .
R 1 R 2.
9. :
= + Δ
(I∙i) = I∙i Δ (I∙i)
10. , M I · i, . , .. M I · i , M I · i .
1
/ | H1 | R 1 = 0,2 | R 2 = 0,1 | ||
t, | H2, | t, | H2, | ||
2
i | I | I · i | M | |
R 1 = 20 | ||||
R 2= 10 |