60 , α =200 l = 24,6 V A =23,1 /c., -
τ (. 1). f = 0,1.
V B . VC , β = 400 D, BD = . , , k = 12.
τ .
T , , .
.
.
1. . , 1 (. 2) ( ).
: t = 0, VA = 18 /c,
:
(.2): m g, N F . 1
, .
, 1, : t = 0, Vx0 = VA,
C1= VA.
,
(1)
,
,
2: t = 0, x0 = 0, 2 = 0,
(2)
l = 24,66 , (2) 1 = l τ, .
.
τ
,
, ..
, τ1 τ2, (1)
τ1 τ2,
, τ2,
2. (.3).
|
|
, - : , .
, , , , . , , : k - .
(3)
, :
(3)
(4)
. V B, α . 18 /c. V B
,
.