1. .
2. .
3. .
4. .
.
1. 5 (.1) 4.
2. , 3.
3. , S1 (.2).
4. . H1.
5. 8 . S2.
6. H1 S1 .
7. , H1 2. .
8. 5 . H1 S1 7. 5 .
: m1=..... m1=..., m2=.... m2=...
S1=..., DS1=...
1.
| / | H1 | H=H1-S1 | S2cp | S=S1-S2 | f |
( )
D=(D 12 + DS12)1/2, D S =(DS12+ DS22)1/2.
2.
| 1 | 2 | 3 | ||||
| / | S2 | D S 2 | S2 | D S 2 | S2 | D S 2 |
.
1. (9) .
1. . m1= m2, :
(Df)2 =2g2m2+[m12gH/S(m1+m2)]2 [4(Dm/m1)2+2m2/(m1+m2)2+(DH/H)2+(DS/S)2]1/2
. :
(Df)2=[m12gH(DS/S(rn1+m2)]2[4(Dm/m1)2+2Dm/(m1-m2)2+(DH/H)2 +DS/S)2]1/2 (11)
2.
f= fcpf
4. , ( (10)).
5. , . , m1 D (mv) = F Dt, ,
m1(v2 v1) = m1g + F1
v1 - , v2 - , Dt - , 2*10-4 . (1) (3), :
|
|
|
F = m1g + m1(2gH)1/2[1 m1/(m1 + m2)]/ Dt
6. .
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2
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470.
210 .
670 .
7
2 .
12.
50.
:
1. , -1 .
2. -1 .
3. -1 .
