Cdu 59:
M
ot va
t ri
n qua
y nhan
h da
n de
u quan
h mo
t tru
e c
o dinh
,
trong 3,14
s to
e d
o go
c cu
a n
o tkng tii 120 v6ng/phu
t de
n 30
0 vong/phiit
Lay
71 = 3,14 Gi
a to
e g6
e cu
a va
t rS
n c
6 d
o Idr
n la :
A 6 r ad /s
l B 1
2 r ad /s
l
C 8 r ad /s
l D 3
r ad /s
l
Ta c6 : 12
0 vong/phii
t =
2 vong/gia
y =
> co , = 47trad/s
300 vong/phu
t =
5 vong/gia
y
Gia to
e go
c cu
a va
t r
^n c6 d
o Idr
n \k:
= lOTirad/
s
CO2 10
71
-4
71 ,/
2\
y =
— =
= 6 rad/s
t 3,1
4 ^
Cdu 60:
Chieu dong thd
i ha
i bijf
c x
a c
6 bifd
c son
g 0
,452
^m
va 0
,243 ^i
m
vao cato
t cu
a mo
t t
e ba
o quan
g dien K im loai la
m cato
t c
6 gid
i ha
n quan
g
dien
1^ 0
,5urn La
y h = 6,625
.10
-^''J.s, c = S l OW
s v
a m
^ = 9,1.10-^^kg
Va
n to
e ba
n da u
CLTC
dai cu
a ca
c electro
n quan
g die
n bkng :
A 9,6 1.l OW
s B l,34.1
.0Ws
C 2,29
.10Ws.
D 9,24
.10Ws
Gi
di
Ca ha
i buT
c x
a de
u ga
y ne
n hie
n tiTgrn
g quan
g dien , tron
g do
X< XQ
Vi va
n to
e ba
n da u
CLTC
dai cu
a ca
c electro
n quan
g die
n diTtf
c ga
y r
a bd
i
biTdrc son
g ng^
n hcf
n ne
n X
= 0
,243 ^im
Ap dun
g phifcfn
g t rin
h Anhxtanh :
he
= A + mv
he m
Omax
Y
suy ra :
^O ma
x
To
he h
e 2.19,875.10
-2
6
= 9,61.10'(m/s)
•Vdy chgn dap an
A
9,1.10
r3
1
1
1
^0,243.10"* 0,5.10
"
52
Gi
ii Ch i tiSt a s thi TS D
H,
CD
M
6n
V
St I
f