Provide given, FBD, required and solution. PROBLEM 2.72: Determine the magnitude of the single couple that is equivalent to the two couples shown.

Structural Analysis
6th Edition
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Instructions: Provide given, FBD, required and solution. PROBLEM 2.72: Determine the magnitude of the single couple that is equivalent to the two couples shown. _ I really need your help in answering this. Thank you!
45 N
45 N
45 N
12:00 O
50 N
(e)
Pytel Kiusalaas_..
2.70 Replace the two couples
a single equivalent cor
75 N
75 N
45
0.6 m
60 N-m
Fig. P2.70
84
CHAPTER 2 Basic Operations with Force Systems
45 N
2.71 Determine the vector representation of the couple shown.
60°
3 m
2.72 Determine the magnitude of the single couple that is equivalent to the two
1.8 m
couples shown.
2.73 Calculate the combined moment of the couple Cand the force Pabout the
axis AB. Use C= 80 N - m andP= 400 N.
60
45 m
Fig. P2.71
5 m
60 N
90 mm
li80 mm
60 N
400 mm
3 m
60 mm
300 mm A
270 mm
210 mm
30 N
30 N
Fig. P2.72
Fig. P2.73
Fig. P2.74
*2.74 Determine the couple-vector that is equivalent to the three couples act-
ing on the gear box, given that C=6000 N. mm, C2 =4200 N- mm, and
C3 = 6600 N - mm.
2.75 The two forces of magnitude F = 24 kN form a couple. Determine the
corresponding couple-vector.
09m-
2.76 The couple acts on the handles of a steering mechanism. In the position
shown, the moment applied by the couple about the z-axis is zero. Determine the
distance b. Use F = 200i – 110j – 80k kN.
09m·
1.2 m
720 mm
80 N
180 mm
480 mm
Fig. Pa.75
15000 N mm
SON A
30 N
Fig. P2.76
Fig. P2.77
2.77 The force-couple system shown can be replaced by a single equivalent
couple C*. Determine C"
2.68-2.81
Problems
85
2.78 A couple of magnitude 360N - m is applied about portion AB of the drive
shaft (the drive shaft is connected by universal joints at points B and C). Compute
...
Transcribed Image Text:45 N 45 N 45 N 12:00 O 50 N (e) Pytel Kiusalaas_.. 2.70 Replace the two couples a single equivalent cor 75 N 75 N 45 0.6 m 60 N-m Fig. P2.70 84 CHAPTER 2 Basic Operations with Force Systems 45 N 2.71 Determine the vector representation of the couple shown. 60° 3 m 2.72 Determine the magnitude of the single couple that is equivalent to the two 1.8 m couples shown. 2.73 Calculate the combined moment of the couple Cand the force Pabout the axis AB. Use C= 80 N - m andP= 400 N. 60 45 m Fig. P2.71 5 m 60 N 90 mm li80 mm 60 N 400 mm 3 m 60 mm 300 mm A 270 mm 210 mm 30 N 30 N Fig. P2.72 Fig. P2.73 Fig. P2.74 *2.74 Determine the couple-vector that is equivalent to the three couples act- ing on the gear box, given that C=6000 N. mm, C2 =4200 N- mm, and C3 = 6600 N - mm. 2.75 The two forces of magnitude F = 24 kN form a couple. Determine the corresponding couple-vector. 09m- 2.76 The couple acts on the handles of a steering mechanism. In the position shown, the moment applied by the couple about the z-axis is zero. Determine the distance b. Use F = 200i – 110j – 80k kN. 09m· 1.2 m 720 mm 80 N 180 mm 480 mm Fig. Pa.75 15000 N mm SON A 30 N Fig. P2.76 Fig. P2.77 2.77 The force-couple system shown can be replaced by a single equivalent couple C*. Determine C" 2.68-2.81 Problems 85 2.78 A couple of magnitude 360N - m is applied about portion AB of the drive shaft (the drive shaft is connected by universal joints at points B and C). Compute ...
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