R =___________ , L =___________
| t |
:______________________
_____________________ ___________
( 3- ):
( 2- ):
( 2- ):
| R | ||||
| , L | ||||
| t |
( 2- )
( , )
:
____________
,
______________
... ______________
102
: :
_____________ , ___________
______________________ ________________________
( 4- ):
( 2- ):
( 2- ):
| m | ||||
| r | ||||
| h | ||||
| t1 | ||||
| t2 | ||||
| t3 | ||||
| t4 |
|
|
|
:
( =mgr)
( 2- )
( 2- )
( , )
ε 1 = ε3 =
1 = 3 =
ε 2 = ε4 =
2= 4=
( )
:
____________
,
______________
..._______________
209
: :
R =___________ n=___________ h =___________
| , |
:_____________ _______________
_____________________ ___________
( 3- ):
( 2- ):
( 2- ):
| (.) | ||||
