Question 1: A railway crossing boom gate, as shown in Figure 1, consists of three parts: • 60 kg arm with a centre of mass at Ga • 90 kg counterweight with a centre of mass at Gyw. • 120 kg mass of pole, lights and signs with a centre of mass acting directly above Point B. Assuming the boom gate has a fully fixed support at Point B, calculate all support reactions at Point B: Bx, By, MB needed to maintain static equilibrium. Report your answers to 4 significant figures. 2.5 m - Gw 1'm 0.5 m Ga 0,75 m 0.25 m Figure 1: Railway crossing boom gate By = 单位 (Assume rightward is positive) 单位 (Assume upward is positive) By = 单位 (Assume anti-clockwise is positive) MB =
Question 1: A railway crossing boom gate, as shown in Figure 1, consists of three parts: • 60 kg arm with a centre of mass at Ga • 90 kg counterweight with a centre of mass at Gyw. • 120 kg mass of pole, lights and signs with a centre of mass acting directly above Point B. Assuming the boom gate has a fully fixed support at Point B, calculate all support reactions at Point B: Bx, By, MB needed to maintain static equilibrium. Report your answers to 4 significant figures. 2.5 m - Gw 1'm 0.5 m Ga 0,75 m 0.25 m Figure 1: Railway crossing boom gate By = 单位 (Assume rightward is positive) 单位 (Assume upward is positive) By = 单位 (Assume anti-clockwise is positive) MB =
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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![Question 1:
A railway crossing boom gate, as shown in Figure 1, consists of three parts:
• 60 kg arm with a centre of mass at Ga
• 90 kg counterweight with a centre of mass at Gyw.
• 120 kg mass of pole, lights and signs with a centre of mass acting directly above Point B.
Assuming the boom gate has a fully fixed support at Point B, calculate all support reactions at Point B: Bx, By, MB
needed to maintain static equilibrium. Report your answers to 4 significant figures.
2.5 m -
Gw 1'm
0.5 m
Ga
0,75 m
0.25 m
Figure 1: Railway crossing boom gate
By =
单位
(Assume rightward is positive)
单位
(Assume upward is positive)
By =
单位
(Assume anti-clockwise is positive)
MB =](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7b911b06-bc4d-47ef-8cf3-825769becc89%2F4cf82342-6a8c-40a3-846f-9fd1f5e3c49b%2Fmmkzz4a_processed.png&w=3840&q=75)
Transcribed Image Text:Question 1:
A railway crossing boom gate, as shown in Figure 1, consists of three parts:
• 60 kg arm with a centre of mass at Ga
• 90 kg counterweight with a centre of mass at Gyw.
• 120 kg mass of pole, lights and signs with a centre of mass acting directly above Point B.
Assuming the boom gate has a fully fixed support at Point B, calculate all support reactions at Point B: Bx, By, MB
needed to maintain static equilibrium. Report your answers to 4 significant figures.
2.5 m -
Gw 1'm
0.5 m
Ga
0,75 m
0.25 m
Figure 1: Railway crossing boom gate
By =
单位
(Assume rightward is positive)
单位
(Assume upward is positive)
By =
单位
(Assume anti-clockwise is positive)
MB =
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