. , - .
1.
t0 = ˚C, d = , M = , g = 9,8/c2 | ||||
N | M1, | mn, | a, /2 | |
= |
2. t0.
, d. g
3. .
4. . . , (30-40 ). , , , (.2).
5. ( 40 90)
6. , M1 n mn, .
7. 5, 6 .
1. :
2. .
3. .
4. t0
2.
, . , ( 4), . , . , , . .
4 |
. , , :
F = σℓ1 + σℓ2 = σπD + σπd,
D, d - . : (7)