, ; .
: , , , , .
, , .
(.1), , :
= .
. :
= r F sin = F ,
, = r sin.
m, v , = m , = , - , = m . L = r m v sin, = (, ). | 1 |
J i , r
Ji = mi ri . (1)
C
J = Ji J = mi ri . (2)
г , , = . (3)
, :
, , , .
, z, ,
, (4)
z; z.
г (4) , : , .
, J = nst = J ,
= , J = ,
J ; ; .
, , ' 㳺 .
˳ | |||
˳ | |||
˳ | |||
C | |||
= m | = J | ||
m ; ; | J ; ; | ||
ʳ | W = | ʳ | W = |
|
|
2 |
(.2). ³ , R, . , . m, . .
г :
ma = mg F,
F , F = m(g a).
F ( ):
M = F R = mR(g a),
R .
, t, h:
= .
, 䳺 , :
M = mR . (5)
' :
= R = . (6)
J = ,
J = mR . (7)
.