A B C
Oxy
A B C
2
(xA - xB)2 + (yA - yB)2 + (zA - zB)2 = rAB
2
(xA - xC)2 + (yA - yC)2 + (zA - zC)2 = rAC
2
(xB - xC)2 + (yB - yC)2 + (zB - zC)2 = rBC
 A B
 VŻ VŻ A B rŻ rŻ
A A A B
A B O
A B
rAB
2
r
B � r
B = rABrABcos0 = rAB
(r
B)2 = const.
t
d dr
B
(r
B)2 = 2r
B = 0
dt dt
dr
B drŻ drŻ
B A
= - = VŻ - VŻ
B A
dt dt dt
r
B(VŻ - VŻ ) = 0
B A
r
B � VŻ = r
B � VŻ
B A
r
B � VŻ = rABVBcosąB
B
r
B � VŻ = rABVAcosąA
A
VAcosąA = VBcosąB
 t
V A
B
a A B
� = �(t)
d " � rad
� = ;
dt s
d� rad
= ;
dt s2
M h
� = � " h
d� d� m
a� = = h = h;
dt dt s2
2
V m
a� = = �2h;
h s2
Ą"n rad
� =
30 s
Ż
V = � � r; V = �rsiną
Ż Ż
V
M
Ż
dV d� dŻ
Ż r
Ż


= = � r + � � = Ż� r + � � V
Ż Ż Ż Ż
dt dt dt
Ż
a1 = Ż � r a2 = � � V
Ż Ż Ż Ż
a1 = rsiną = h = a�
a�
a2 = �2h = a�
a�
V = r1 " �1
V = r2 " �2
r1 �2
= = i
r2 �1
D1 = mz1
D2 = mz2
m z1 z2
D1 �2 n2 z1
i = = = =
D2 �1 n1 z2