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1 BC A B C˧ D

2ԧ BC A1Ŧ Ŧ T/4 T B CT/4 D

A 3 B x 2Hz O x O 0.375s s x x 0.125s s 0.25s s x

A

O

B

x

4 4 1/2 B A B C D

5 24m 18s 12 6s 1.5s 6m

6l O l 2
2 l (1+ ) 2 g

7 A 0. 5s 0. A 2s A 2.4s0.8s 2.2s0.6s
C O A B

C

O

A B

8 4 50 100
n50T= nT

l T = 2 g


T l

50 l = n l

n=100

9
Z ZO k O( m, O x0) PO x. mg=kx0 P F=k(x+x0)-mg=kx

x0 x

O O P

XF F=-kx O

10 0 0 0 T/ 4 0 0 T/ 2 0 0 3 T/ 4 0 0 T 0 0

Ԧx Ԧ v T AD A xv B xv C xv D xv

96

11 ާ 0.2s
Y/m

-3 C2 C1 0 1 2 3 4

X/m

51+4nm/s53+4nm/s ( n=012)

12 g1=9.801m/s2, g2=9.795m/s2
1 T g
T1=1s
T2

= 0.9997T1 = 0.9997s

?t = ?T ? 86400 = 26.5s
26.5s

13 R=45m O A 10m B A

8

A

O

B

14 ާ x +x -x y x=1,2,3,4,5,6,7,8 x= 4,8 x= 2,6
y v v

0 12 3 4 5 67 8 x

15 l T R G
l l l T = 2 = 2 = 2R 2 g GM / R GM 4 3 M = R 3

3l = 2 GRT

16 K M A v0 m 1 2 m 1 kA = (M + m)a kA
(M + m)g mg? = ma 1 2 1 Mv0 = (M + m)v2 2

?=

M

2

2

v =

M v0 M +m

A

17 M m K ԧ m O? x ?, 0
m x1; x1 x0

(M + m)g A = x0 + x1 = M k O kx0 = mg O kA (M + m)g am = = ? m m

kx1 = Mg

M



N = (M + m)g


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