6.
.
1. : 1.4.
2. :
3.
4. :
, , ,
5. -
: .
1.
1. .
: 1) , 2) , 3) , 4) .
. . (.1) : , . , . , : . : , - : .
m, , h, 1 = mgh
g - c . , , 2 = 
J 
J- , 
0 -
. ,
J = mgh (1)
, ,
= 
si n 
- , - , T -
, t - . , , : = 
= 
cos
(t = 0, 1/2 T, T, 3/2 T ..)
0= (2)
(1) (2) mgh = J ()2 (3)
2.
. .
l - , R - , r - , (. 2),
|
|
|
h = OO1 = BC - BC1 = 
()2 = ()2 - ()2 = l2 - (R - r)2,
(1)2 = (1)2 - (1 1 )2 = l2 - (R2 + r2 - 2Rrcos ),
h = 
, 2 l. ,
h = 
(3) mg 
J = 
(4)
(4) , , , .
, , , , . , .
, - .
6
