q lb/ft 1.5 ft 8 ft 2370 lb Ra-v Rs-H B 1.5 ft ft RA 2370 Ib 2800 Ib
q lb/ft 1.5 ft 8 ft 2370 lb Ra-v Rs-H B 1.5 ft ft RA 2370 Ib 2800 Ib
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 centre of the 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 billboardis q = 120lb/ft. (b) Find the smallest wind loads q that would cause the structure to tip over.
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