. , .
, , . () M, ( ) m, L, l. , . Y ( ), Z ( , ).
( ):
, Z, Rl=Mgcos[alpha]l/L. , . " .
- (Tractive force).
max Tractive force=W x mu.
mu . , X . , - .
, , ( - ).
-
1000 ", (!) 30 , 0.2 , 1.6 , 1 ( - 0.8, ... )
107 " . 214 ". , , , .
200 " ? (... 0.4 ?) ( 50?) 1.6 ". , " , .
- ...
- - , . - 100 " "- .
( = )- . , , .
?
( ), ... .
- .
.