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1.
1
H, | n, / | Pn.c., | Δ, | ω1, -1 | Θ, | AB, | CD, | q, / |
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1. - .
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2. m=q*l, l ; q , 1 , q=20 /; m1 m=5m1.
3. , , Js=1/12m*l2.
4. , .
2.
1. .
4 , 2
1- .
(0-1)->(2-3)->(4-5).
μ1(/)=()/lBC().
2. .
VB1,2= ω1*AB= 31*0,051=1,62 /
μV= .
() .
ѴB1,2 ⊥ AB
ѴB3=ѴB1,2+ѴB3B1,2 ѴB3B1,2 || CB
ѴB3=ѴC+ѴB3C ѴB3C ⊥ CB
ω 3= ѴD/CD=2,4/0,534=4,4(-1)
ω 4=de* μV /DE=5(-1)
b3d=pb3*BD/CB=3090/164=19()
ѴED⊥DE
ѴE=ѴD+ѴED
ѴE=ѴEE0+ѴE0 ѴEE0 || xx
μ =aB1,2(/2)/laB1,2().
aB1,2= ω12*AB=961*0.051=50 /2
aB1,2 || AB
aB3=aB1,2+akB3B1,2+arB3B1,2
aB3=aC+anB3C+atB3C
akB3B1,2=2* ω3*ѴB3B1,2=2*4,4*1,5=13(/2)
arB3B1,2 || CB
atB3C ⊥ CB
anB3C= ω32*BC=19*0,164=3,17 (/2)
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anB3C || BC
b3d=b3*BD/CB=3399/164=21()
aE=aD+anED+atED
aE=aE0+akEE0+arEE0
anED ||DE
atED ⊥ xx
ɛ3=atB3C/CD=681(-2)
ɛ4=atED/DE=30(-2)
3.
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:
mi=q*li
m1=q*lAB=20*0,051=1()
m2=m5=m1*5=1*5=5()
m3=q*lCD=20*0,267=5 ()
m4=q*lDE=20*0,05=1()
:
Gi=g*mi
G1=g*m1=9,8*1=9,8()
G2=g*m2=9,8*5=49(H)
G3=g*m3=9,8*5=52(H)
G4=g*m4=9,8*1=9,8(H)
G5=g*m5=9,8*6=49(H)
:
JSi=mi*l2i/12
JS1=m1*l2AB/12=1*0,0512/12=0,0002(*2)
JS2=0
JS3=m3*l2CD/12=5*0.2602/12=0,028(*2)
JS4=m4*l2DE/12=1*0,0522/12=0,00021(*2)
:
Pi=-mi*aSi
P1=-m1*aS1=-1*25=-25(H)
P2=-m2*aS2=-5*50=-250(H)
P3=-m3*aS3=-5*8,5=-45(H)
P4=-m4*aS4=-1*79=-40(H)
P5=-m5*aS5=-6*79=-200(H)
3 4 :
i=-JSi* ɛi
3=-JS3* ɛ3=-0,028*681=-19(*)
4=-JS4* ɛ4=-0,00021*30=-0,0063(*)
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(4-5):
34+R05+P5+P4+G4+G5+Pn.c.=0
∑=Ry34*DE-M4+P4*h4+G4*hG4=0
Ry34=M4-P4*h4-G4*hG4/DE
Ry34=0,0063-40*0,026-9,8*0,026/0,052=-25(H)
R34=-R43
R34=360(H)
(3):
R43+R23+P3+G3+R03=0
∑=R43*hR34-P3*hP3-G3*hG3-R23*CB-M3=0
R23=R43*hR34-P3*hP3-G3*hG3-M3/CB
R23=-360*0,24-45*0,126-52*0,026-20/0,203=-558(H)
R03=858(H)
(2):
P2+R12+R32+G2=0
R12=744(H)
1- (0-1):
Py+R21+R01+G1+P1=0
∑A=-Py*AB-R21*hR21-G1*hG1
Py=-R21*hR21-G1*hG1/AB
Py=-744*0,05-9,8*0,02/0,051=-733(H)
R01=1365(H)
4.
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90 ω1, , .
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∑P=-Py*pb1,2-G3*hG3-P3*hP3-G4*hG4-P4*hP4-P5*pe+Pn.c.*pe-G1*hG1=0
Py=-G3*hG3-P3*hP3-G4*hG4-P4*hP4-P5*pe+Pn.c.*pe-G1*hG1/pb1,2≈733(H)
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1. ..- ( - 2008 ).
2. ..- ( 1988 ).
3. ..- ( 1970 ).