加載中. ..
PDF
103
F8901
________________
50 22B
10
2 1. 10 kg
9.8 N 98 N 980 N 9800 N
3 2. (
P
Q
)
R
P
Q
P
Q
P
Q
P
Q
R
4 3. (rigid body)
3 4 5 6
4 4.
1 5. (friction force)
2 6.
1 7. 7 (drum)
1
T
2
T
s
eTT
12 /
(degree)
2
T
1
T
s
3 8. A B 32 km/h 24 km/h A B A B
1.566 m/s -1.566 m/s 2.222 m/s -2.222 m/s
1 9. 9 (bracket) 800 N F B (moment)
B
M
BA
r/
F
BA
r/
(0.2 m)
i
ˆ
+(0.15 m)
j
ˆ
F
(800cos60o N)
i
ˆ
+ (800sin60o N)
j
ˆ
B
M
=
Fr BA
/
B
M
2 10. 10 y
12 cm 14 cm 16 cm 18 cm
111. 11 3 rad/s 8 rad/s2
C
4.0 m/s2
4.5 m/s2
6.0 m/s2
8.0 m/s2
3 12. (lead angle)
1
tan
(0.1273) (mean diameter) 10 mm
(pitch)
1 mm 1.5 mm 2 mm 3 mm
1 13. O B 8 cm 1200 rpm (angular
acceleration)
B
a
0
B
a
=1263.2 m/s2 ( O)
0
B
a
=1263.2 m/s2 ( B)
10
rad/s2
B
a
=1263.2 m/s2 ( O)
10
rad/s2
B
a
=1263.2 m/s2 ( B)
2 14. 14
(statically indeterminate)
(Young’s modulus)
3 15. Fx=100 N Fy=-150 N Fz=300 N F
250 N 300 N 350 N 550 N
1 16. 16 W 1=45o2=30o
W
o
o
75sin60sin
W
o
o
75sin45sin
W
o
75sin
W
o
75cos
1 17.
kjiP ˆ
3
ˆ
3
ˆ
7
kjiQ ˆ
5
ˆ
2
ˆ
2
2211
23
cos 1
2211
23
sin 1
2211
23
cos 1
2211
23
sin 1
2 18. 18 (rocker bearing) 2
(independent reaction)
0 1 2 3
2 19. 19
(truss) (frame) (machine)
2 20. 20 J
(sin30o=cos60o=0.5, sin60o=cos30o=0.866)
10.8 N
m 18.7 N
m
21.6 N
m 43.2 N
m
7
9
16
W
1
2
18
19
20
11
14
10
4 21.
3 22. 30 kW 500 rpm 42 MPa
317371
mm
334742
mm
369483
mm
3138966
mm
4 23. (shear center)
L
3 24.
4
4 25.
1.5
1.333
(Q)
2 26. 1000kg/m32 m3
3.92 kN 7.85 kN 11.76 kN 15.68 kN
1 27. (dynamic viscosity)
(kinematic viscosity)
4 28. z d p
atm
p
g
p
dzdp/
dppatm
atmg ppp
ppp atmg
3 29.
(Conservation of matter)
3 30. 7.5 cm 8 cm
78.5 Pa 157 Pa 785 Pa 1570 Pa
4 31. (laminar) (turbulent)
(Euler number) (Weber number) (Mach number) (Reynolds number)
3 32. 500 N 125 N
31600 cm3 35100 cm3 38200 cm3 42000 cm3
3 33. (Buoyant force)
2 34. (system) (net heat) Q
k
W
E
k
WQE
k
WQE
0 k
WQE
0 k
WQE
3 35.
2 36.
H
F
V
F
VH FF
22 VH FF
2/)( VH FF
VH FF
1 37. (pipeline) (one-dimensional flow)
4 38.
= ×
= ×
= ×
= ×
3 39. (continuity equation)
3 40.
2 41. (Reynolds number)
4 42. (hydraulic jump)
2 43. 4 m 10 m
0.617 MN 1.233 MN 2.466 MN 4.932 MN
3 44. (Reynolds transport equation) (stored energy)
(Kinetic energy) (Potential energy) (Thermal energy) (Internal energy)
1 45.
2 46. U
1
2
A
1122 hhPA
1122 hhPA
22hPA
11hPA
2 47. (bends) (valves) (head losses)
1 48. (open-channel)
2 49. (Darcy-Weisbach)
3 50. (Reynolds number)
(laminar flow)
900 1800 2300 4000