Q7-8 The roller-coaster car has a speed of 20 ft/s when it is at the crest of a vertical parabolic track. Determine the car's velocity in m/s when it reaches point B. Neglect friction and the mass of the wheels. The total weight of the car and the passengers is 350 Ib. -20 /s 200 t -200 ft A 113.67 B 114.48 C 115.24 D 116.21 E 117.43 118.39 Q8-8 The roller-coaster car has a speed of 20 ft/s when it is at the crest of a vertical parabolic track. Determine the nomal force it exerts on the track when it reaches point B in N. Neglect friction and the mass of the wheels. The total weight of the car and the passengers is 350 lb. A 30.4 B 29.1 C 27.4 D 26.7 E 25.3 F 24.2
Q7-8 The roller-coaster car has a speed of 20 ft/s when it is at the crest of a vertical parabolic track. Determine the car's velocity in m/s when it reaches point B. Neglect friction and the mass of the wheels. The total weight of the car and the passengers is 350 Ib. -20 /s 200 t -200 ft A 113.67 B 114.48 C 115.24 D 116.21 E 117.43 118.39 Q8-8 The roller-coaster car has a speed of 20 ft/s when it is at the crest of a vertical parabolic track. Determine the nomal force it exerts on the track when it reaches point B in N. Neglect friction and the mass of the wheels. The total weight of the car and the passengers is 350 lb. A 30.4 B 29.1 C 27.4 D 26.7 E 25.3 F 24.2
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Question
![Q7 -8 The roller-coaster car has a speed of 20 ft/s when it is at the crest of a vertical
parabolic track. Determine the car's velocity in m/s when it reaches point B. Neglect
friction and the mass of the wheels. The total weight of the car and the passengers is 350
Ib.
-20 fi/s
200 t
-200 ft
A 113.67
B 114.48
C
115.24
D 116.21
E 117.43
F
118.39
Q8-8 The roller-coaster car has a speed of 20 ft/s when it is at the crest of a vertical
parabolic track. Determine the nomal force it exerts on the track when it reaches point B
in N. Neglect friction and the mass of the wheels. The total weight of the car and the
passengers is 350 lb.
A 30.4
B 29.1
E 25.3
27.4
D 26.7
24.2
Q9-10 The 2300 kg car increases its speed uniformly from rest to 40 m/s in 20 s up the
inclined road. Determine the maximum power in kW that must be supplied by the engine,
which operates with an efficiency of c = 0.85.
3.
20
B 147
E 456
A 113
C
319
D 374
F
624
Q10-10 The 2300 kg car increases its speed uniformly from rest to 40 m/s in 20 s up ue
with an efficiency of c= 0.85.
A 57
B 74
C
160
312
D 187
E 228](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd21f0d22-6c05-4d75-9976-c9f8f13717d4%2Fbc9a291e-61a9-4505-b603-c81bdb2a2015%2F97tlgd7_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q7 -8 The roller-coaster car has a speed of 20 ft/s when it is at the crest of a vertical
parabolic track. Determine the car's velocity in m/s when it reaches point B. Neglect
friction and the mass of the wheels. The total weight of the car and the passengers is 350
Ib.
-20 fi/s
200 t
-200 ft
A 113.67
B 114.48
C
115.24
D 116.21
E 117.43
F
118.39
Q8-8 The roller-coaster car has a speed of 20 ft/s when it is at the crest of a vertical
parabolic track. Determine the nomal force it exerts on the track when it reaches point B
in N. Neglect friction and the mass of the wheels. The total weight of the car and the
passengers is 350 lb.
A 30.4
B 29.1
E 25.3
27.4
D 26.7
24.2
Q9-10 The 2300 kg car increases its speed uniformly from rest to 40 m/s in 20 s up the
inclined road. Determine the maximum power in kW that must be supplied by the engine,
which operates with an efficiency of c = 0.85.
3.
20
B 147
E 456
A 113
C
319
D 374
F
624
Q10-10 The 2300 kg car increases its speed uniformly from rest to 40 m/s in 20 s up ue
with an efficiency of c= 0.85.
A 57
B 74
C
160
312
D 187
E 228
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