~ ?yvD ?Dy
? 5 ?
?
¥e??¨
~ ?yvD ?Dy
Ba wL¥ MLaELù5
21
12
1
tan
kk
kk
+

?
HM?¥ wL a 
ì??
)¥C??l1?H wL??)¥ ML-W
¥C?
?/m ?:1 5μ
2
L
θ
1
L
2
L
1
L
2
k
1
k
? a sY1 a 
??)¥ ML¥|
qb
xO
y
1
L
2
L
~ ?yvD ?Dy
è p wL ? )¥ MLZ
?DELZ? b
eexy
y
=+
) 1,0(
Z?

 p?¤
x
0' =

++ yexyy
y
e
y
1
|
)1,0(
=

x
e
y
1
1?=?
exy =?1
?
^μ
ELZ?1
# MLZ?1
3
~ ?yvD ?Dy
è p?
Z?
+=
+
=
.
2
1
2
3
,
1
2
3
tt
y
t
t
x
V
U¥ wL t=1)¥ MLZ?DELZ?b
?
H? wL
¥?1
1=t
,
32
2
3
3)1(
2
13
)(
)(
2
6
23
23
+
+
=
+?

=


=
t
t
t
t
ttt
tt
tx
ty
dx
dy
10
7
|
32
2
3
|
1
2
1
=
+
+
=
== tt
t
t
t
dx
dy
)2(
10
7
2?=? xy
)2(
7
10
2=? xy
# MLZ?1
ELZ?1
)2,2(
3
~ ?yvD ?Dy
è p
 wL D ??)¥C?b
2
xy =
x
y
1
=
ó ? V???1 b
=
=
x
y
xy
1
2
) 1,1(
1|)
1
(,2|)(
121
2
1
=

==

=
== xx
x
kxk
??)
ì¥ ML|
qsY1
]
2
,0[
π
θ ∈ 3
1
tan
21
12
=
+
=
kk
kk
θ
? | 5? 
0
6.713arctan ≈=θ
V¤
3
~ ?yvD ?Dy
è
?)¥ ML¥°?USZ p
L
2
π
θ
θ
== er
3
=
=
θ
θ
θ
θ
sin
cos
,
ey
ex

L¥?
Z?1
1
2
2
2
=
==∴
=
π
π
π
θ
e
e
dx
dy
k ML¥|
q1
θθ
θθ
θθ
θθ
sincos
cossin
ee
ee
x
y
dx
dy
t
t
+
=


=
2
,0
2
π
π
θ eyx ===
H??
)0(
2
=?∴ xey
π
MLZ?1
0
2
=?+
π
eyx'
~ ?yvD ?Dy
=aUS"??D ML¥C?
US"?Z? V
UBH wLb
y1US"¥?M?
H
)(θrr =
θ
θ
d
dr
r =

)(
}V wL¥ ML|
qb
X?
? °?USDUS¥1" V¤ wL
°?US"?¥?
Z?1
)(θrr =
=
=
θθ
θθ
sin)(
cos)(
ry
rx
θ
??
 1?b
~ ?yvD ?Dy
! wL? ¥ MLDà¥??1 
5 wL¥ ML|
q1,
),( θrM
α
α
θ
x
O
y
M
??·m?
θα +=
)(
)(
tan
θ
θ
r
r

=
θθθ
θθθ
θθθθ
θθθθ
θ
θ
α
tan)()(
)(tan)(
sin)(cos)(
cos)(sin)(
)(
)(
tan
rr
rr
rr
rr
x
y
dx
dy

+

=

+

=


==

1
θ
θ
θα
tantan1
tantan
)tan(tan
+
=+=

2
2
1a
2

T V¤
? 1?D ML¥C??
^
~ ?yvD ?Dy
è
ML¥C?1Bè
b
¥?D1è
£
ü
L )0( >= ker

£
x
y
o
M
α
θ
T
θ
θ
k
ker =

)( Q
k
ke
e
r
r
k
k
1
)(
)(
tan ==

=∴
θ
θ
θ
θ

yN ==
k
1
arctan?
~ ?yvD ?Dy
?aM1M
q
.
,
,
,)()(
M
q?1M1M
q
?"
?MoG ?¥-W9iB?1"
DV7
ì¥M
q-Wi
?1"
D7M
?
^ V?f
#
!
dt
dy
dt
dx
y
xtyytxx ==
M1M
qù5
X? ?B?M
q
H ? p
6B?M
q?
~ ?yvD ?Dy
q¤í
ó?$
H
[
I
1 §
ó¥§
ó
R ?ù?lX
¥?
_úZ
BlX[
m
mhkm
80
60 /10 è
3
222
60
)()(
+=
==
xy
tyyttxx
51lX?
ó?¥  ?
lX?
ó?¥  ?1

H Y
!
dt
dx
x
dt
dy
yt?=? 22 p?¤

T
H
dt
dx
y
x
dt
dy
= '
kmmxhkm
dt
dx
08.080,/10 ===??
kmmy 1.01006080
22
==+=
)/(810
1.0
08.0
hkm
dt
dy
=×=|
ì} ?

T¤
~ ?yvD ?Dy
è
3
,500./140,
500
q
^
43?
jL¥?9F
ü
H?  oú1
e
ü 
q1

6
ü) ?1
#°B  oV ? 743?
5¥?1
43?
jL ú1
ea
!  o

6
,
,,
α
ht
500
tan
h

p?¤

T
H t
dt
dh
dt
d
=?
500
1
sec
2
α
α
,/140
e
ü=
dt
dh
Q
2sec,500
2
== α
ü
H? h
)/(14.0
e=∴
dt

?9F
q
α
ü500
ü500
~ ?yvD ?Dy
è
3
,20
,120,4000
,/8
0
3

l
H

6+
ü
ü
H


'¥
£¢??1
ü?
^é1
£ o
e¥8
@

@ ?
£ o?
ü
£[
5
£ o
=

1

'1
!
H Y
),(
),(
tV
tht
2
34000)( htV =
p?¤

T
H t
dt
dh
h
dt
dV
= 38000
,/28800
3
l
H
ü=
dt
dV
Q
l
H
ü /104.0≈
dt
dh


6-
q
0
60
4
0
0
0
m
,20
ü
H? =∴ h
~ ?yvD ?Dy
è


¥
Fhá
3]?o? ?K
?B ?o¥??¥9v
q9
^
6
ü
/
eù
2
e
??

¥9v
q1
$
3
),(),( tSStrr == M??
1
!o¥??1
,
2
rS π=5
: p?¤
H]
H t
tt
rrS

=

π2
} ?

T¤
H? 6,12262 =

=?==
t
rrt
e
ü /1446122
2
2
ππ =××=

=t
t
S