1 (. 4.6) m1=20 , 4 2 r2 (m2 = 2). , 3 m3=3.
1, 2 䳺
= 15 × t = 0 . 2 - R2=0,4, r2 = 0,2, 2 = 0,3. ҳ 3 4 m3=m4 R3 = R4 = 0,3. ҳ 2,3 4 , 1 .
4.6
. 2 3 . 4.6
3 (. 4.7) : , P3=m3g, X3 Y3, 2 S3 N3.
3 , 䳺 , .
,
- z;
- 3;
- , 3, z.
4.2 -
z | |||
ʳ | |||
4.7
. (4.1)
:
t=0, , . (4.2)
2 (. 4.8) : P2=m2g, X2 Y2, S2 ( ), 3 , S3 N3 (. 4.7).
2 (. 4.8) Z.
, (4.3)
- 2 Z.
, (4.3)
. (4.4)
1 4 (. 4.9) : P1=m1g P4=m4g, , X4 Y4.
4.8
1 4 (. 4.9) Z :
, (4.5)
LZ 1 4 Z, - .
4.9
ʳ LZ LZ1
1 LZ4 4 Z
LZ1 = m1V1R4, (4.6)
LZ4 = IZ4ω4. (4.7)
, , , LZ
(4.5)
. (4.8)
(4.1), (4.4), (4.8)
(4.9)
:
(4.1), (4.4), (4.8), (4.9) :
.
, m1=20, m2=2, m3=m4=3, r2=0,2, R2=0,4, 2=0,3, R3=R4=0,3, = (16+11t2) , M0=15 , g=9,81 ,
|
|
. (4.10)
1, (4.10), (4.2)
(4.10)
1: .
³: .