1. , , . G = g, R (. 121). .
2. :
.
3. .
:
: t = 0, = , . 1 = mv 0, C 2 = .
, (1)
. (2)
.
. 121 . 122
(. 122). , :
, (3)
. (4)
: t = 0, = 0, . : 3 = 0, 2= 0. (4)
. (5)
4. . t 1, t 2. t 1 + t 2 = t 0. (1,2) : t = t 1, , = 0, (5) t = t 2, = . t 1, , v 0:
(6)
, (7)
. (8)
v 0,
.