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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GROUP PROBLEM SOLVING Given: Three concurrent forces F3 = 750 N acting on a bracket %3D Find: The magnitude and angle of the 45° resultant force. 30° F = 850 N F2 = 625 N
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