Bundle: Mechanics Of Materials, Loose-leaf Version, 9th + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
9th Edition
ISBN: 9781337594318
Author: Barry J. Goodno; James M. Gere
Publisher: Cengage Learning
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Chapter 3, Problem 3.4.5P
A hollow tube ABCDE constructed of monel metal is subjected to five torques acting in the directions shown in the figure. The magnitudes of the torques are T1= 1000 lb-in., T2= T4= 500 lb-in., and T3= T5= 800 lb-in. The tube has an outside diameter of d2= 1.0 in. The allowable shear stress is 12,000 psi and the allowable rate of twist is 2.0°/ft.
Determine the maximum permissible inside diameter d1, of the tube.
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As shown in the figure below, a ring is used to suspend a load and is supported by Cable OA and Spring OB. Given that the tension in Cable OA is 400 N, what is the weight of the load being supported? Assume the system is in static equilibrium.
4.
(a) State the conditions that must be met to ensure dynamic balance is achieved for long rotors.
(b) A rotor carries three out-of-balance discs in planes A, B and C as shown in Figure 4. The out-of-
balance mass x radius products of the rotor discs are tabulated in Table 4.
The shaft is to be dynamically balanced by adding balancing masses in planes P and Q, spaced along
the shaft at a distance da = 800 mm.
Determine the magnitude mara and angular position of the balancing mass x radius product that
must be added to plane Q.
MBB
Ов
θε
mdc
Мага
End View on Plane P
P
MBB
MATA
dA
dB
dc
do
Figure 4
moc
Table 4
MATA = 0.6 kg mm
6A = 0°
d₁ = 200 mm
mers = 0.2 kg mm
6g = 45°
dB = 400 mm
mcrc = 0.4 kg mm
Bc=240°
dc = 600 mm
Ans. (b) = 110.5°, moro = 0.2 kg mm
Need help in adding demensioning am am so confused
Chapter 3 Solutions
Bundle: Mechanics Of Materials, Loose-leaf Version, 9th + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
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