, , , .
, .
F . , - r, , F: =[ r, F ] - , |M|=|r|∙|F|∙sinα, |F|∙sinα=l . =xi+Myj+Mzk, y=|[r,F]|y, z=|[r,F]|z, x=|[r,F]|x. , . z Z. ( ) . , : L=[r,p]=[r,mv]. | r|∙|p|∙sinα=l . , L L=[r,p], L=[r,mv]. L=rmvsin(v,r)=rmv=ωmR2, v r. dL/dT=M. . .
.
d l /dt=M m0 = m. .
(d l /dt)x=Mx$ (d l /dt)y=My; (d l /dt)z=Mz
.
N : 3- 0. . . .
(1)
: =>
3- 0.
1 :
,