38 A 1
4
\
. 1.
,
1.
:
.
2. 3. 4.
.5
2.
97,1MHz
LOVE-FM
90,8 MHz.
ZOO-RADIO
LC
:
1. 2. 3. 4.
3.
.5
.
L
R
,
p
: 1. L=p
2. L= 路p路R
3. P=L路R
4. L=p路R.
.5
4.
U
.
: 1. 0,2Hz
2. 0,4Hz
3. 2,5Hz
4. 5Hz
5.
1
.5 5
. 1.
,
,
.
2.
.
3. (pulsar).
.
4. . 5.
1.
.5
.
( )
m1=m=0,1Kg.
mx ( ),
,
m2=14m. 1
2
m1
= , ,
:
m2
mx.
2.
.7
. , : n=2,
.
3.
1=60º
2=30º.
.6
V=10m/s
,
y=0,2
(170t - x/2).
S,
V
(AS), :
1. y=0,2
(170t - x/2).
3. y=0,2
(170t - x/4).
2. y=0,1
(170t + x/2).
4. y=0,2
(165t - x/2).
:
S.
.2
.
.6
. 4.
: 1.
+kx+bu=0.
.2
2.
.3
.
t=0
, : y= x.
t, t1: 9 4
. .
(
)
m/s. d=10m t=0,25s. 1. 2. 3. 4.
u,
f
.6 .5 .7
.
.
t=0,325s. : x =10m, .
‘
milimetre
.
.7
m=1Kg K=100N/m
M=3Kg
.
L=2m
,
.
=600 (t=0),
.
.
t=1s,
300,
,
D
1.
:
.5
.
2.
.7
.
m,
3.
(
t=0).
.6
4.
.7
; :
= , ,
,
= ,
,
=
2
=10, :I=
(
,
=
)
1.
( ).
nv
,
.
2. .
. .
3. 4.
. . ,
5. 6.
. .
:
(3) : 1 0 :3 0
. .