ÿþ q .
q
l
l
l 2 l l l
P r z y j m u j e m y o z n a c z e n i a p o d p ó r : A i B
c y f r a m i : 1 , 2 , 3 i 4 .
q
2
1 3
A
l
4
l
B
l 2 l l l
A A
R A M A .
B B
V B i p o z i o m a H B
q W 1 = W 2 = q l = 2 q l .
W 1 W 2
M A
I
R A
2
1 3
A
l
4
l
H B
y
B
V B
l l l l l
x
c z t e r e c h n i e w i a d o m y c h : M A , R A , V B i H B V B
= 0 : V B q l = 0 Ò! V B = 4 q l
"P i y
i
I
W 2
3 l
l
1 0 l
V 2
I
2
3
H 2
1
s i n =
l
1 0
3
4
c o s =
l l
1 0
S 1
B
2 I
S 1 B 4 V 2 i H 2 2
2
2 I
S 1
W 2
V 2
I
2
3
H 2
l
S 1
4
S 1
l l
B
2 I
2 1 0
I
S 1 l W 2 l = 0 Ò! S 1 = q l
"M = 0 :
i 2
3
i
B .
9 0 o
l
1
s i n =
S 2 S 1
5
2 l
5 l
2
c o s =
5
H B V B
2
S 2 B
B
p o z i o m a H B S 1 S 1 j e j
9 0 o
l
1
s i n =
5
S 2
2 l
5 l 2
S 1
c o s =
5
H B
V B S 1
B .
1 1
B
+ S 1 = 0 Ò! H B = q l
"P = 0 : V B H B S 1
i
3
i
R A
"P = 0 : R A + H B = 0 Ò! R A = 1 1 q l
i x
3
i
M o m e n t p o d p o r o w y M A
B .
W = W 1 + W 2 = 4 q l
M A
2
1 1 1 3
A C
R A = q l
3
l
4
l
1 1
H B = q l
B
3
V B = 4 q l
l l l l l
1 4
R A l M A W l = 0 Ò! M A = q l 2
"M = 0 :
i B
3
i
C .
"M = 0 : H B l V B l M A + W l = 1 1 q l l q l l ( 1 4 q l 2 ) + 4 q l l =
i C
3 3
i
2 2 1 4
= q l 2 q l 2 + q l 2 + 8 q l 2 = 0
3 3
3