A 130-lb wrecking ball B is attached to a 45-ft-long steel cable AB and swings in the vertical arc shown. Determine the tension in the cable (a) at the top C of the swing, (b) at the bottom D of the swing, where the speed of B is 13.2 ft/s.
A 130-lb wrecking ball B is attached to a 45-ft-long steel cable AB and swings in the vertical arc shown. Determine the tension in the cable (a) at the top C of the swing, (b) at the bottom D of the swing, where the speed of B is 13.2 ft/s.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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12.44
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es at a
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es at a
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b) the
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Fig. P12.43
Fig. P12.44
B
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200
D
-30%
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12.44 A 130-lb wrecking ball B is attached to a 45-ft-long steel cable AB
and swings in the vertical arc shown. Determine the tension in the
cable (a) at the top C of the swing, (b) at the bottom D of the swing,
where the speed of B is 13.2 ft/s.
1.2 lb
C
20°
A
B
12.45 During a high-speed chase, a 2400-lb sports car traveling at a speed
of 100 mi/h just loses contact with the road as it reaches the crest A of
a hill. (a) Determine the radius of curvature p of the vertical profile
of the road at A. (b) Using the value of p found in part a, determine
the force exerted on a 160-lb driver by the seat of his 3100-lb car as
the car, traveling at a constant speed of 50 mi/h, passes through A.
Fig. P12
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Transcribed Image Text:here
own.
vire,
es at a
range
and if
es at a
owing
b) the
clined
1.2 lb (
Fig. P12.43
Fig. P12.44
B
4.
A
200
D
-30%
E
12.44 A 130-lb wrecking ball B is attached to a 45-ft-long steel cable AB
and swings in the vertical arc shown. Determine the tension in the
cable (a) at the top C of the swing, (b) at the bottom D of the swing,
where the speed of B is 13.2 ft/s.
1.2 lb
C
20°
A
B
12.45 During a high-speed chase, a 2400-lb sports car traveling at a speed
of 100 mi/h just loses contact with the road as it reaches the crest A of
a hill. (a) Determine the radius of curvature p of the vertical profile
of the road at A. (b) Using the value of p found in part a, determine
the force exerted on a 160-lb driver by the seat of his 3100-lb car as
the car, traveling at a constant speed of 50 mi/h, passes through A.
Fig. P12
Fig. P
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