4-53 The supporting structure of the billboard is attached to the ground by a pin at B, and its rear leg rests on the ground at A. Friction may be neglected. Point G is the center of gravity of the billboard and structure, which together weigh 2800 lb. To prevent tipping over in high winds, a 2370-lb weight is placed on the structure near A, as shown. (a) Compute the magnitudes of the reactions at A and B if the wind load on the billboard is q = 120 lb/ft. (b) Find the smallest wind load q that would cause the structure to tip over.
4-53 The supporting structure of the billboard is attached to the ground by a pin at B, and its rear leg rests on the ground at A. Friction may be neglected. Point G is the center of gravity of the billboard and structure, which together weigh 2800 lb. To prevent tipping over in high winds, a 2370-lb weight is placed on the structure near A, as shown. (a) Compute the magnitudes of the reactions at A and B if the wind load on the billboard is q = 120 lb/ft. (b) Find the smallest wind load q that would cause the structure to tip over.
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 supporting structure of the billboard is attached to the ground by a pin at B, and its rear leg rests on the ground at A. Friction may be neglected. Point G is the center of gravity of the billboard and structure, which together weigh 2800 lb. To prevent tipping over in high winds, a 2370-lb weight is placed on the structure near A, as shown. (a) Compute the magnitudes of the reactions at A and B if the wind load on the billboard is q = 120 lb/ft.
Transcribed Image Text:4.53 The supporting structure of the billboard is attached to the ground by a pin
at B, and its rear leg rests on the ground at A. Friction may be neglected. Point G is
the center of gravity of the billboard and structure, which together weigh 2800 lb.
To prevent tipping over in high winds, a 2370-lb weight is placed on the structure
near A, as shown. (a) Compute the magnitudes of the reactions at A and B if the
wind load on the billboard is q = 120 lb/ft. (b) Find the smallest wind load q that
would cause the structure to tip over.
Transcribed Image Text:q lb/ft
10 ft
G.
1.5 ft
8 ft
2370 lb
A
B
1.5 ft-
-7 ft-
Fig. P4.53
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