Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 45, Problem 9ASRQ
To determine
The correct technician among the two that is A and B who are discussing about the aspect ratio of tire.
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2. Figure 2 shows a device for lifting bricks and concrete blocks. It comprises two compo-
nents ABC and BD, with a frictionless pin at B. Determine the minimum coefficient of friction
required at A and D if the device is to work satisfactorily.
W
all dimensions in inches
Figure 2
D
1. The shaft AD in Figure 1 supports two pulleys at B and C of radius 200 mm and 250 mm
respectively. The shaft is supported in frictionless bearings at A and D and is rotating clockwise
(when viewed from the right) at a constant speed of 300 rpm. Only bearing A can support thrust.
The tensions T₁ = 200 N, T₂ = 400 N, and T3 = 300 N. The distances AB = 120 mm, BC = 150
mm, and CD120 mm. Find the tension 74 and the reaction forces at the bearings.
A
T
fo
Figure 1
5. Figure 5 shows a two-dimensional idealization of the front suspension system for a car.
During cornering, the road exerts a vertical force of 5 kN and a leftward horizontal force of 1.2
kN on the tire, which is of 510 mm diameter. Draw free-body diagrams of each component and
determine the forces transmitted between them.
250
A
-320
B
170
D
170
-220-220-
all dimensions in mm.
Figure 5
Chapter 45 Solutions
Automotive Technology
Ch. 45 - List five things that could cause premature...Ch. 45 - Define lateral and radial runout.Ch. 45 - Prob. 3SACh. 45 - Define dynamic and static wheel balance.Ch. 45 - Describe the proper procedure to seal a puncture...Ch. 45 - The rim offset is the vertical distance between...Ch. 45 - Prob. 7SACh. 45 - Explain why a TPMS relearn should be performed...Ch. 45 - A tire that wobbles from side-to-side is said to...Ch. 45 - A front tire has excessive wear on both edges of...
Ch. 45 - All of the following statements are correct...Ch. 45 - All of the following statements are correct...Ch. 45 - Which of the following statements about sidewall...Ch. 45 - All of these statements about improper wheel...Ch. 45 - Prob. 7MCCh. 45 - Technician A says that the front wheel bearings on...Ch. 45 - Technician A says that dynamic wheel imbalance...Ch. 45 - Technician A says that front bearing assembly...Ch. 45 - Technician A says that replacement wheel rims...Ch. 45 - Prob. 5ASRQCh. 45 - While choosing the correct tire for a vehicle:...Ch. 45 - Technician A says that on most vehicles, the...Ch. 45 - Prob. 8ASRQCh. 45 - Prob. 9ASRQCh. 45 - Prob. 10ASRQ
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