The 75-lb boy stands on the beam and pulls on the cord with a force large enough to just cause him to slip. If the coefficient of static friction between his shoes and the beam is (μs)D = 0.35, determine the following reactions if the beam is uniform and has a weight of 120 lb. Neglect the size of the pulleys and the thickness of the beam. 1 The magnitude of the vertical component reaction at A is Blank 1 lb. 2 The magnitude of the horizontal component reaction at B is Blank 2 lb. 3 The magnitude of the vertical component reaction at B is Blank 3 lb.
The 75-lb boy stands on the beam and pulls on the cord with a force large enough to just cause him to slip. If the coefficient of static friction between his shoes and the beam is (μs)D = 0.35, determine the following reactions if the beam is uniform and has a weight of 120 lb. Neglect the size of the pulleys and the thickness of the beam. 1 The magnitude of the vertical component reaction at A is Blank 1 lb. 2 The magnitude of the horizontal component reaction at B is Blank 2 lb. 3 The magnitude of the vertical component reaction at B is Blank 3 lb.
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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The 75-lb boy stands on the beam and pulls on the cord with a force large enough to just cause him to slip. If the coefficient of static friction between his shoes and the beam is (μs)D = 0.35, determine the following reactions if the beam is uniform and has a weight of 120 lb. Neglect the size of the pulleys and the thickness of the beam.
1 The magnitude of the vertical component reaction at A is Blank 1 lb.
2 The magnitude of the horizontal component reaction at B is Blank 2 lb.
3 The magnitude of the vertical component reaction at B is Blank 3 lb.
Transcribed Image Text:13
12
D
А
В
C
5 ft
-3 ft
1 ft
-4 ft
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